Aaron was driving Scott, Steve, Natasha, and Gwen to the Cabin where Tony lived with Pepper and his 4-year-old daughter, Morgan.

They arrive and see Tony carry Morgan towards the house, and he saw them too.

Natasha gave him a nod and he gave one back. He then looked at Aaron, and he could easily tell that Aaron hasn't fully forgiven him yet.

Tony invited them to the porch and poured them a drink as the five explained what Scott told them, but he was having none of it.

Scott: No, trust me, we know what it sounds like..

Steve: Tony, after everything you've seen, is anything really-

Tony: Quantum fluctuation messes with the Planck Scale, which then triggers the Deutsch Proposition, can we agree on that?

Tony hands each of them a drink. Only Aaron and Gwen understood Tony.

Tony: In Layman's terms, it means you're not coming home.

Scott: I did.

Tony: No, you accidentally survived, it's...it's a billion-to-one cosmic fluke. And you wanna pull a...What do you call it?

Scott was thinking of name for the stunt he's proposing.

Scott: Time Heist?

Tony: (scoffs) Yeah, Time Heist. Of course, why didn't we think of this before? Oh, because it's laughable? Because it's a pipe dream?

Gwen: Stark, you know just as much as I do that it's not any of those things.

Steve: The Stones are in the past. We can go back, we can get them.

Natasha: We can snap our own fingers, we can bring everybody back.

Tony: Or screw it up worse than he already has, right?

Aaron: That's a risk I'm willing to take.

Steve: I don't we will.

Tony: (to Steve) I gotta say, I sometimes miss that giddy optimism (turns to Aaron) and your exceptional drive. However, high hopes and drive won't help if there's no logical, tangible way for me to safely execute said Time Heist. You and Gwen both saw what happened the last time someone messed with time. I believe the most likely outcome would be our collective demise.

Scott: Not if we strictly follow the rules of time travel. That means no talking to our past selves, no betting on sporting events...

Tony: I'm gonna stop you right there, Scott. Are you serious telling me that your plan to save the universe is based on Back to the Future?

Scott scoffs before lying.

Scott: (shakes his head) No.

Aaron knew that this plan was based on the movie, but it's better than nothing.

Tony: Good, you had me worried there, because that'd be horseshit. That's not how quantum physics works.

Natasha: Tony...we have to take a stand.

Tony: We did stand. And yet, here we are.

Scott: I got you a lot on the line. You got a wife, a daughter...But I lost someone very important to me, a lot of people did. And now, we have a chance to bring her back, to bring everyone back! And you're telling me that you won't even-

Tony: That's right, Scott, I won't even. I can't. (turns to Aaron) I'm sorry, Aaron, but it's not worth the risk.

Aaron sighs, knowing that he's right. But he couldn't give up, not when a chance like that presents itself.

Just then, the front door opened as Morgan runs to hug her father.

Morgan: Mommy told me to come and save you.

Tony: (hugs Morgan back) Good job, I'm saved. (turns to the others) I wish you would've come here to ask me something else. (gets up) Anything else. Honestly, I'm happy to see you guys. It was...The table's set for 8...

Steve: Tony, I get it. And I'm happy for you, I really am. But this is a second chance.

Tony: I got my second chance right here, Cap. I can't roll the dice on that. (turns to the others) If you don't talk shop, you can stick for lunch.

He walks inside with Morgan while the others walk back to the car.

Natasha: He's scared.

Aaron: I honestly don't blame him.

Scott: Yeah, but what are we gonna do? We need him, are we gonna stop?

Steve: No, I wanna do it right.

Gwen: We're gonna a really big brain.

Scott: (points to the cabin) Bigger than his?

Timeskip

The quinter were at the diner with Bruce, who had somehow merged his brain with the Hulk's body.

Scott was staring at Bruce in confusion.

Bruce: Come on, I feel like Aaron and I are the only ones eating here, try some of that. Have some eggs.

He pushes a large bowl of eggs towards Scott, who was still staring at Bruce, while Natasha looked at Aaron weirdly.

Aaron: (to Natasha) What? I need the extra calories.

Scott: (to Bruce) I'm so confused.

Bruce: These are confusing times.

Scott: Right. No, that's not what I meant, I'm...

Bruce: Nah, I get it, I'm kidding! I know, it's crazy. I'm wearing shirts now.

Scott: Yeah. W-How? Why?

Bruce: 5 years ago, we got our asses beat. Except it was worse for me, because I lost twice. First, Hulk lost, then Banner lost, then everyone lost.

Natasha: No one blamed you, Bruce.

Bruce: I did. I even thought about calling it quits like Aaron did for two years after it happened.

Aaron: (sighs) Yeah, that was a very low point for me.

Bruce: Yeah. For years, I've been treating the Hulk like he's some kind of disease, something to get rid of...But then, I started looking at him as the cure. 18 months in a gamma lab. I put the brains and the brawn together. And now look at me. Best of both worlds.

Just then, three kids, two boys and a girl, walked up towards them.

Girl: Excuse me, Mr. Hulk?

Bruce: Yes?

Girl: Can we get a photo?

Bruce: 100 percent, little person. Come on, step on.

He hands the phone to Scott and he prepares to take a picture.

Bruce: (to the kids) Say "green!"

Scott takes the picture and goes to hand the phone to the kids.

Scott: You wanna grab one with me? I'm Ant-Man.

The kids looked at Scott awkwardly, causing Aaron and Gwen to stifle their laughs as Scott realizes.

Scott: They're Hulk fans. They don't know Ant-Man. No one does.

Bruce: No, he want you to...

Scott: I don't want a picture.

Boy 1: (shakes his head awkwardly)

Scott: He's even saying no, he doesn't. I get it.

After a few seconds of awkward interaction...

Scott: Take the goddamn phone.

The kids take the phone.

Girl: Thank you, Mr. Hulk.

Bruce: That was great, kids. Thank you very much.

Bruce & The Kids: Hulk out!

The kids walk away.

Aaron: (whispers to Gwen) That's gonna be me in that position, isn't it?

Gwen: (whispers) Yep.

Steve: (to Bruce) Bruce. About what we were saying..

Bruce: (turns to the others) Right. The whole "time travel do-over"? Guys, it's outside of my area of expertise.

Natasha: Well, you pulled this off. I remember a time when that seemed pretty impossible, too.

Bruce slowly nods his head, silently agreeing to help them.

Timeskip

Bruce, Steve, Natasha, Scott, Aaron, and Gwen were at the Avengers Compound.

Pietro joined them, intrigued by what was happening.

Aaron told him that they found a way go back in time, grab the Infinity Stones from the past, and use them to bring everyone back.

Pietro said he was in almost immediately, and he called Yelena to tell her that.

Yes, Pietro and Yelena are in a happy relationship together for the past 2.5 years.

They decided to test time travel with the quantum tunnel in the back of Scott's van as Scott wore a specialized suit.

Bruce and Aaron operated the controls.

Bruce: Okay, here we go. Time travel test number 1. Scott, fire up the uhh...the van thing.

Scott opens the back of the van and activates the quantum tunnel.

Gwen: Okay, breakers are set. Emergency generators are on standby.

Bruce: Good, because if we blow the grid, I don't wanna lose...(whispers and gestures to Scott) Tiny here in the 1950's.

Scott: Excuse me?

Natasha: He's kidding. (turns to Bruce) You can't say things like that.

Bruce: (turns to Scott) It was just...a bad joke.

Scott nods before walking to the van.

Pietro: (to Bruce) You weren't kidding, were you?

Bruce: I have no idea! We're talking about time travel here! Either it's all a joke or none of it is.

He turns to Scott and gives him a thumbs up.

Bruce: We're good! Put your helmet on.

Scott does so.

Bruce: Scott, I'm gonna send you back a week, let you walk around for an hour, then bring you back in 10 seconds, makes sense?

Scott: Perfectly not confusing.

Steve: Good luck, Scott. You got this.

Scott: (smiles) You're right. I do, Captain America.

He got sucked into the tunnel as Bruce and Aaron flicked some switches, preparing to bring Scott back.

Aaron: On the count of 3...2...1.

Scott came back, but there was one problem.

He was a preteen.

Teen Scott: Uhh, guys? This...this doesn't feel right.

Pietro: The hell?

Aaron: Oh, crap.

Gwen: What's going on?

Bruce: Hold on.

Natasha: Is that Scott?

Teen Scott: Yes, it's Scott.

He got sucked back into the tunnel and came back out a few seconds later, but...

Old Scott: Oh, my back!

Aaron: Shit!

Gwen: What is this?

Bruce: Can we get a little space here?

Steve: Yeah, yeah, yeah. Can you bring him back?

Aaron: We're working on it.

Old Scott got sucked into the tunnel and came back out, but...

Steve: (deadpanned) It's a baby.

Bruce: It's Scott.

Steve: AS A BABY!

Bruce: He'll grow.

Steve: Bring Scott back!

Aaron: (to Natasha) When I say kill the power, kill the power!

Natasha: Oh my God!

She goes to the circuit breakers.

Aaron: And...KILL IT!

Natasha kills the power to the tunnel as Scott comes back as his normal self.

Scott: Somebody peed my pants...

Gwen: (puts her hand on her chest) Oh, thank God.

Scott: But...I don't know it it was baby me or old me...or just me me.

Bruce: TIME TRAVEL!

Aaron and Steve shake their heads as Bruce looks at them confused.

Bruce: What?

Steve walks outside.

Bruce: I see this as an absolute win.

Aaron sighs as he grabs his notebook and looks at the equations he's written, wondering where he went wrong.

???: It's the EPR Paradox.

Aaron turns to see Tony walking towards him.

Tony: You didn't put the EPR Paradox into consideration.

Aaron: (sighs) So we ended up pushing time through Scott instead of the other way around.

Tony: Exactly. Good thing I figured it out.

Aaron: So I'm guessing you changed your mind?

Tony: Yeah. Look, I know you still haven't forgiven me yet-

He was interrupted when Aaron puts his hands out to Tony.

Aaron: We can put that on hold for the time being.

Tony smiles softly as he shakes Aaron's hand.

Tony: We could use the whole team for.

Aaron: (smiles) We can make that happen.