May found that Grace Gibbons has one constant visitor, despite the hospital records saying she has no visitors and has no next of kin.

Orlin Dwyer.

May was on her way out of the hospital when she overheard one of the hospital staffs that hates metahumans talking to someone about finishing the job.

"Orlin Dwyer. From what it says here, he grew up in the Midwest. He's been in and out of juvie, been off the map for a few years and returned to Central City a few years ago." Cisco says.

"Part time employee for Schrekz chemicles for the last two years." Harry adds. "Gave a fake address, took custody of his niece, Grace Gibbons after her parents were murdered by a metahuman."

"That explains why Dwyer hates metas." Barry sees.

"Once he gets his powers, he starts targeting them." Peter adds. "Powers he must've gotten the night of the Enlightenment, and was struck with a shard from the satellite."

"Which was also the same night that grace went into a coma. Where Dwyer visits her every day for the last three weeks." May finishes after she was able to get the truth out from the hospital.

"Then lets go get him." Barry says.

"I'm sorry, Cicada has a dagger that dampens our powers, remember?" Miles asks.

"Morales is right, Allen. As long as he has the dagger, Parker is the only one that can actually give him a beating." Harry agrees.

"Then let's destroy his dagger." Barry says.

"How are we gonna do that Unless we have some kind of power dampening dagger power dampener hidden away in storage?" Ralph asks.

"We don't, but if we did we'd come up with a much better way of saying it." Cisco tells him.

"Yeah, like dagger-dampener..." Peter says.

"That's actually...that'd descent." Cisco agrees. "'Cause, you know, you're running into..."

"Just abbreviate. P-D-P-D." Caitlin offers when everyone just comes up with their own way of saying it.

"Guys." Nora interrupts them while looking into a book of hers. "What if we could make one? A weapon more powerful than his weapon. Cicada can control his dagger, so what we would need would be something more powerful than his connection to it."

"Like a supercharged magnet?" Frankie asks.

"I don't think we have anything like that around here." Fox says.

"And even if we could get our hands on the dagger, we'd still have to figure out how to take the dark matter out to negate its powers." Caitlin says.

"And we would need to find some indestructible alloy that has super-magnetic properties but also has the ability to negate dark matter. I mean, where are you gonna find something like that?" Harry questions.

"The past." Nora says and everyone is confused.

"The past?" Peter asks.

"You've already come across everything we need. A strong alloy with magnetic properties." Nora tells them and they all know something like that.

"Savitar's suit." Cisco says.

"Something to remove dark matter." Nora continues.

"The Speedforce transmitter Hunter used to steel Berry's speed." Caitlin says.

"Would that work since that was the Speedforce?" Cisco asks.

"They're made of exotic particles, same as dark energy. We would need some of that to recalibrate it." Harry tells him. "Meaning you'd have to infuse the transmitter with the same kind of dark matter."

"Like the DeVoe kind?" Ralph asks.

"More like the Particle accelerator kind." Peter corrects him.

"Wait, you wanna blow up Star labs again?" Ralph questions.

"No, not again. We just need to go back to the first time that it happened." Nora explains, meaning she wants to go back five years.

"This is gonna mess with the timeline too much." Barry says.

"No, Savitar's suit, the transmitter, these are all just discarded objects in time, so if we steal them, it won't affect anything." Nora promises.

"Even if we did all that, we can't waltz into the hospital with our dampening device." Ralph says. "He can smell us coming, and then he's gonna be gone."

"Then we do a time hack." Nora says and now Harry's starting to get suspicious about where she's getting her ideas.

"A time hack?" Peter asks.

"That's when you plant something in the past so it's available in the future." Harry explains to him.

"You go back, take the device and hide it near the hospital. Somewhere it won't be discovered for five years." Cisco tells Barry.

"You guys just need to work out the best dates to go back to." Barry agrees to it.

"On it." Cisco agrees and everyone leaves and Harry looks at the book Nora left.

-

"Okay, these are the best of times." Cisco says as they write down the best times Barry and Nora will be able to travel to the past.

"Incidentally, they're also the worst days in our history." Peter says.

"True, but they're the best times for Barry to travel back to; Savitar. When we defeated him and you phased into his suit, epic by the way, and then destroyed it while sending pieces of it flying so if they went for one of the farther pieces, our past selves wouldn't notice." Cisco says.

"Barry would just need to get back into the Speedforce before the timeline catches up and the suit gets erased from existence." Caitlin agrees.

"What about the Speedforce transmitter thing?" Ralph asks.

Fox slaps a marker onto a date that's also a week or two before he joined their team. "The night that Zoom injected the Speedforce into him after stealing the Flash's speed, it was left in the viewing room."

"Barry would need to make sure that nobody's in there when he takes it." Cisco agrees.

"What about the particle accelerator explosion?" Ralph asks.

"Well, right before everything went sideways, Wells was in the cortex, and we..." Peter was saying when the memory of that day comes back. "I was in the pipeline while Cisco and Caitlin were in the cortex."

Caitlin and Peter have a quick flashback to that day. The day they lost someone important to them.

"That's...the best time for Barry to go into the time vault. Put a piece of Savitar's suit in the plinth, and when it explodes it should infuse it with dark matter." Caitlin says.

"Once that's done, we'll have all the pieces we need to make the device. We plant it at the hospital, the rest is history." Cisco says.

"Great, let's show Barry. See what he thinks." Ralph says as they start dragging it off.

"Right behind you." Peter says as he looks for something near the computers when his senses go off and he turns to see Harry holding Nora's book open. "Ahh! Don't do that." He warns Harry.

"Recognize this?" Harry asks and Peter looks to see symbols in Nora's book that look exactly like what Barry was writing when he came out of the Speedforce.

"What is that? Nora's journal?" Peter asks, looking closely. "How on earth does Nora know that?" He questions while turning the pages of the book and sees it's filled with the symbols.

"You know how to decipher it?" Harry asks him.

"Well...Cisco wrote an algorithm last year, but it was only about to decrypt one sentence." Peter says as he pulls it up for him.

"Of course it only could. Ramon wrote it." Harry mocks and pulls up the algorithm to try and decrypt it for good.

"Here's a million dollar question; why do you care so much?" Peter wonders and then puts the pieces together. "You don't trust Nora, do you?"

"No." Harry says honestly. "You saw what she said in there, Parker. In the time she's been here, would you think she could come up with that herself?"

Peter thinks about it and doesn't see Nora as much of a scientist, more like her father CSI, and definitely not like them, and she doesn't have the experience like them. "No."

"Someone's helping her. Someone giving her information. And I want to know who it is." Harry says as they go to the cortex as the speedsters leave and Ralph plays Back in Time.

-

Barry and Nora travel back and come out during Savitar as their first stop.

They look around and they're in the forest where they fought Savitar for the last time when said Savitar leaps into the air followed by Barry, Jay, Wally, and Harry dressed in the Velocity-Spider as they get hit by his lightning and almost spot the travelers.

Later in the fight, they hang back as it's wrapping up.

Before Savitar could kill Peter, he gets blasted by a giant mist of cold and Peter looks to see Frost saved him as she walks up to Peter and helps him stand back up.

"I knew you didn't have it in you, Caitlin." Savitar says as the speedsters return and Barry quickly changes Peter into the Velocity suit. "I only have a few minutes left. I can feel it. But before I go, I'm gonna kill Joe. And Wally. And Iris. If I am going to die, then everything the two of you love is going to die too." He promises and turns to Cisco, Miles and Caitlin.

Peter speeds at him and with all of the power his suit could give him, he was able to go inside the Savitar armor and pushes Savitar out of his own armor.

Before anyone could realize what happened, Peter starts using his own super strength and webbing to destroy the suit from the inside and the suit explodes.

"No!" Savitar cries.

"How does it feel to come so close, just to end up on the ground!?" Peter asks of the false god. "You let the pain and the darkness determine who you became!"

"But we won't let the pain decide our destinies." Barry promises and the two of them then combine their speed and send two upper cut's to Savitar's chin, sending him flying before tumbling to the ground.

Barry and Nora have a run in with a time wraith, but they were able to get a shard from the suit and race off before it had the chance to catch up to them.

-

Next stop, the night that Hunter stole Barry's speed.

Hunter takes the speed and gains even more speed and becomes even faster.

Nora and Barry sneak in and watch from the cortex doorway the sene play out.

As soon as Hunter gets it under control, he speeds in and grabs Peter by the neck and throws him against the wall.

"Now there's only one more pest I need to deal with." Hunter states and starts choking Peter who's trying to pry himself free.

Harry raises his gun to Hunter, but they all know it's useless. It couldn't stop him before he got faster. "Jay, please, you have to let him go." Caitlin pleads to him not wanting Peter to die.

"I know some piece of you cared for the team, so if you have any humanity left, then please, let him go." She begs and Hunter drops Peter, while he was gasping for air, Hunter took the opportunity to kidnapp Caitlin.

Barry and Nora hide as he speeds past them.

"CAITLIN!!" Cisco shouts as Zoom speeds off with Caitlin.

"We...g-gotta...get Caitlin back..." Peter states as he tries to regain his breath from nearly being choked. Barry tells Nora to stay as he sneaks in for the device.

"Peter, you can't take on Zoom alone." Past Barry tells Peter as he tries to stand up.

"Try and stop me!" Peter yells as Barry sneaks into the viewing room and sees the transmitter is gone.

A device charges up behind him and he turns to see Harry holding the speedster gun in him.

"You got changed fast." Harry comments, dropping the gun, believing he's past Barry.

"Yeah, it was, jut to weird being in it without my speed." Barry plays along.

"Well, that's your own damn fault, isn't it?" Harry informs him.

"I guess so." Barry agrees.

"I know so." Harry corrects him while looking around the room.

"What are you looking for?" Barry asks.

"I'm looking for anything that can help me find my daughter. All right, just..." Harry says as he throws everything off the counter and drops his gun. "I don't have my daughter. You don't have your speed. Zoom took Caitlin as leverage on Parker, and this whole thing," he says as he swings the transmitter around, "this whole thing has going to hell and a half!" He goes to break it.

"No, wait!" Barry yells at him to stop and Harry notices his Flash ring on his hand. "Her frequency."

"What?" Harry asks, putting the pieces together.

"Jesse's frequency. People from Earth-2 vibrate at a different frequency. Maybe you can find her that way." Barry offers remembering that's how he did it in his timeline.

"Figure out how to find Snow." Harry says as he walks off and hands it to Barry, thinking he needs it for something.

Zoom returned and chased the two of them through the timeline and was attacked by a Time Wraith and ended up breaking the device.

-

They learned they landed in the time where Barry traveled back to help from Eobard.

The two enter his time vault and see the other Barry (making three Barry's in one day) is handcuffed to the wheelchair.

"Well...things just got a lot more complicated, didn't they?" Thawne-Wells asks as he stands up and faces the two of them. "Barry Allen. But which Barry Allen? Clearly you're...from a lot later than this one."

"Way later." Barry answers.

"Way later." Thawne-Wells repeats and looks to Nora. "Who's your friend? Let me guess. Jesse Chambers? No. Maybe Lawrence. Wait. Danica Williams."

"It doesn't matter who she is." Barry stops him from guessing.

Sadly, that confirmed exactly who she is for Thawne-Wells. "Your daughter. You've brought me your daughter. It's Dawn, if I'm not mistaken."

"Nora." She corrects him.

"Nora. Oh, that's nice. Well, at least it's a lot better than that arachnids kids." Thawne-Wells complains. "Mayday Parker. Yet again, she is better then Miguel O'Hara." He then watches as both of their faces are confused. "Yet again, maybe the timelines changed. Mayday was Parker and Watson's kid after all. Time travel is so weird. What do you want?"

"I need you to fix this for me." Barry says as he holds up the broken transmitter.

"No..." Thawne-Wells says as he looks between them. "No, if you're here...and he's here...that means..."

"You don't get home." Barry tells him.

"I get home!" Thawne-Wells yells as he spins to face him. "I get home. I go home! I get everything-"

"You don't go home, Thawne! Unless you help me." Barry says and Thawne-Wells looks over his options.

"What do you want?" He asks.

"Like I said, you're gonna fix this." Barry says.

"To do what?" He asks.

"Drain dark matter."

"Who's dark matter?"

"None of your business."

"It is my business."

"No, it's not."

"There's no chance..."

The two of them then start overlapping one another yelling back and forth when Nora interrupts.

"Cicada's!" Nora finally says.

"The one who got away." Thawne-Wells understands. "You want to destroy Cicada's dagger, don't you?" He guesses.

"I want to save lives."

"I bet you do. I bet you do. Especially your own, right, Barry Allen?"

"Look, that me, he's gonna wake up soon." Barry looks to his younger self. "He sees me, standing here, your whole timeline is messed up. You're never gonna get home, you know that's true!"

"I know! I know!" Thawne yells and sees he has no other option. "Where are my manners? Can I get you a cup of water?" He asks Nora.

Late, Thawne is looking over the device and is fixing it.

"So, who made this?" Thawne asks.

"Someone smarter than you." Barry answers.

Thawne laughs at that. "I doubt that. You know, Allen, for your plan to work, you're gonna actually gonna have to have his dagger in your possession."

"We've got that covered."

"How's that?"

"With this." Nora says, showing the piece of Savitar's suit and Thawne looks at it as Barry takes it.

"Is that-"

"A piece of Savitar's suit, yeah." Barry answers.

"You know what's funny about your dad, Nora, is he hates me. Hates me with a passion, and yet a version of him, this Savitar, is a much bigger jerk than I ever was. Did you see the face? Did you.." Thawne asks as he laughs. "I think Parker called it a pizza face."

"Can you hurry up?" Barry asks him.

"Yeah, I'll hurry up." Thawne says and gets back to work. "I gotta tell you, Allen, using Savitar's suit, it's a smart idea."

"It was hers." Barry says and Thawne looks to Nora.

"Clever girl." Thawne comments and finishes up the device when the other Barry wakes up. "Oops. Gotta go." He says and hands it to Barry. "I still look forward to seeing how this all pans out." He then speeds off back into the time vault.

They then leave with the final destination in mind.

The night it all began.

-

Barry and Nora sneak into Star labs while the press conference was still going on and ride the elevator down to the main floor.

"Why are we going this way? Why don't we just speed into the vault?" Nora asks.

"Because it's a big moment, Nora. Thawne's been planning this night for 14 years. If we use our speed, he'll feel it. Also, Peter's here. If we make the wrong move, his spider senses will tingle." Barry explains.

"Feel a disturbance in the Speedforce." Nora says as she looks at Grodd who's still in his cage.

"I wouldn't do that." Barry warns her as they pass him.

"Dr. Wells, the accelerator is primed and ready for particle injection." Cisco says from inside the cortex.

"I feel like I should say something profound like, one small step for man." Wells says.

"What's happening?" Nora asks.

"Wells is about to blow up the city." Barry tells her.

"All I can think of to say is I feel like I've waited for this day for centuries." Wells says as he finally gets ready to turn on the accelerator when Peter's senses go off and he looks around the room.

Barry sees Peter looking for them and Wells also feels something wrong and he walks into the hallway just when Barry and Nora vibe into the vault.

Wells walks towards the vault when the others follows.

"Dr. Wells?" Peter calls out. "Everything Okay?"

"Yeah, I'm great." Wells assures him. "Caitlin, do you think you could have Ronnie run the particle accelerator parameter numbers just one more time? Just for good measure." He asks.

"Sure." Caitlin says as she goes to do so.

"And Caitlin? The bottle of Dom we've been saving."

"Is today the day?" Caitlin asks.

"I think today might be the day." Wells says and she goes for it.

Peter chuckles at his cautiousness. "You've got everyone on pins and needles here, Dr. Wells. I'm sure Cisco is sweating in excitement."

"Exciting, isn't it, Parker?" Wells says with a smile. "Glad to see you came."

"The biggest thing in science in recent years. If I turned down the invite to have a front row seat, I'd be insane." Peter tells him.

"You have a good heart and a great mind, Peter. Not many people have both." Wells informs him.

"Thanks, dr. Wells." Peter says with a smile.

"I know you will have a spectacular life. Maybe one day you'll have your own laboratory named after you." Wells says.

Peter laughs at that. "Yeah, I don't know. Science is my life. If I didn't do it, I'd have a lot of free time...wouldn't know what I'd do with all that free time."

"Maybe find a girl?" Wells offers.

"Yeah, I don't think there's anyone out there for me." Peter sighs.

"There's someone out there for everyone, Peter. It's just the matter of how long you're willing to wait for that person." Wells replies with a smile on his face.

"You ever consider writing poetry?" Peter quips and Wells laughs at that as they leave back to the cortex to turn on the accelerator.

Inside the vault, Barry and Nora were listening to everything, waiting for them to leave and then gets to work on collecting the dark matter as it's activated.

The explosion goes off and Ronnie gets trapped inside the pipeline and Peter comforts Caitlin.

Stein and Ronnie gets merged together.

DeVoe gets hit with his Thinking Cap and becomes the Thinker.

Barry gets struck and becomes the Flash.

The Mardon brothers plane gets hit and they become metahumans.

They go to the hospital and watch as both Wells and Barry are brought inside along with the nurse that May saw and even May herself.

Barry hides the device inside one of the pillars of the hospital and they return to the future.

-

They return and hear Back in Time is still playing.

"Did you even go?" Ralph asks them.

"Told you time travel was weird." Cisco says.

"Did it work?" Peter asks.

"Yeah. Is he still at the hospital?" Barry asks.

"Hasn't left her side." Caitlin confirms.

"Let's go get Cicada." Barry tells them.

-

Barry and Peter are all in their suits as they have everyone on standby. Ralph, Frankie, Harry, Miles, Cisco, Caitlin, are all waiting as Cicada exits with his cloak, mask and dagger.

Doesn't that mean he was wearing that in the hospital?

You'd think someone would report a scary looking man marching out of the hospital like that.

"Cicada." Peter and Barry greet him.

"Is that what you call me?" Cicada asks as his dagger sparks.

"Not all metahumans are responsible for what happened to Grace." Peter tells him.

"Yes, they are." Cicada states. "The destruction they cause, the death, the pain."

"We know more about pain and death more than anyone." Barry says to him. "Taking it out on the world, that's not gonna help. Think about Grace."

"She's all I think about, Flash. And I'm making the world safe for her." Cicada tells them. "Every metahuman must go."

"What about you?" Peter asks, trying to appeal to the father side of him. "You're a metahuman, too."

"I am, and after you're gone, I'll join you." Cicada promises.

"And what about Grace? What's going to happen to her?" Peter asks.

That seems to have only made him angry, sounding like a threat, as he throws the dagger and it goes right to the pillar where the device is, stopping the dagger.

Everyone then gets their powers back and they see its working.

"Let's see how you like it." Barry says as he goes in speeding and beats Cicada as Cisco takes the dagger and throws it into a breach.

"We gotcha, now!" Miles cheers.

"Oh, man. You look like you're having a day." Cisco mocks. "Hope you weren't attached to that thing, because now it's floating through space."

"We stopped you." Nora says.

"You stopped nothing." Cicada says as he raises his hands and screams.

Caitlin warns them the dagger s coming back and it slams into the ground, sending everyone flying.

Caitlin and Harry come out to help and Cicada throws the dagger and knocks them backwards.

Peter quickly gets up and raises his fists. "Mano y Mano it is." He runs in and ducks to dodge a swing and punches Cicada, sending him flying.

Cicada gets up and throws his dagger, Peter dodges the dagger and Cicada punches him while he was distracted by it. He calls the dagger back as Peter tries getting back up with his head feeling fuzzy after that punch.

"This ends now." Cicada says as he goes in to strike him.

"NO!" Caitlin yells and they all look to see she's become Crystal and she shoots Cicada into the side of a car.

They all start getting back up, surprised that Caitlin can also still use her powers.

"Let's dance, cricket freak." Crystal dares Cicada as he takes to the sky to avoid her.

-

They return to Star labs and sees he's disappeared from the map again.

"I'm still confused. How could Crystal come out?" Miles asks.

"Just the same as Parker's and your abilities came from radioactivity and not dark matter, same goes for Snow. She's immune to te dagger as well. She saw Parker in danger, Crystal took it from there.

"So that means there's three of us who can stop Cicada." Peter says with a smile on his face. "And cricket freak?"

"It just came out." Caitlin shrugs.

-

Everyone started to go home and Harry returned the book before anyone could notice it was missing and Cisco's algorithm was able to translate one message.

The timeline is malleable

Peter finds Harry and sees the translation.

"You think she's hiding something?" Peter asks.

"She's definitely hiding something." Harry knows.

"I think we know someone who can help us decrypt the rest of this." Peter reminds him.

They go to the time vault and activate Gideon.

"Good evening, Peter Parker. Dr. Wells."

"Hello again, Gideon." Harry greets, now seeing Peter's plan. "I would like you to access the files from Nora West Allen."

"I'm sorry, Dr. Wells, but all entries have been permanently deleted by Nora West-Allen."

"She's definitely hiding something." Peter says.

"Well, Gideon, I want you to translate something for me." Harry decides and they hope she can decrypt the language.

-

Earth-90

The Monitor has just recollected his Book of Destiny after testing this world and it's heroes and they've failed him.

This universes Barry Allen crawled towards him and the book as he picks it up.

"You've failed." Monitor tells Barry.

"Why are you doing this?" Barry asks him.

"You did this to yourself. And now all of you will perish." Monitor says as he reopens the book and Barry speeds off.