In Nepgear's dream:

Nepgear was holding a dark energy sword in her hand as she was in front of Neptune.
Nepgear: Sis... I can't do it...
Neptune: That sword has the power to take a goddess's life, right? The only ones left are you and me.
A huge dragon soars through the sky roaring.
Neptune: A sacrifice needs to be made in order to defeat them.
Nepgear: Sis...
Neptune: Do it, Nepgear.
Nepgear: ... Okay. I will.
Nepgear raises the sword up in the air.
Nepgear: I'm sorry!
Nepgear slashes Neptune as she falls on the floor.
Neptune: Gahh!
Nepgear begins to cry.
Nepgear: S-Sis... Sis!
Neptune: Yes?
Nepgear: Huh?
Nepgear looks at Neptune as she was a slime.
Nepgear: Huh?!
More and more slimes of Neptune appears.
Neptune: You've still got more to go!
The slimes merged together making a tidal wave as it goes towards Nepgear.
Nepgear: N-Nooooo!

In Neptune's church:
Nepgear was having a bad dream as she was still talking in her sleep.
Nepgear: Don't...
Compa puts a towel on her forehead.
IF: Her fever isn't going down, huh?
Compa: Poor thing...
Sonic: I've never seen this type of illness.
Vert: It's an illness where it continues to give you bad ends, right?
Histoire: That's right. It has taken me three days to recall, but a goddess three generations ago also caught it.
Neptune: And it's called Bad End Syndrome?
Vert: Bad End Syndrome...

In Uni's dream:
Uni was training as she attacks the dragon as it disappears.
Uni: How's that, sis? I've gotten pretty good, haven't I?
Arfoire: You certainly have.
Uni: Huh?
Arfoire was next to her as she has Noire's hair and her pins.

Arfoire: Therefore, I'll allow you the privilege of having this eggplant stuffed into your face!
Uni: Wh-Who are you?!
Arfoire goes towards Uni and puts the eggplant in her mouth.
Uni: Mmm...!

End of dream:
Uni has a fever as well as she was resting in the office where Noire is.
Uni: Anything but the twin-tails...
Noire: It looks like Uni has the same sicknes...

In Rom and Ram's dream:
A wedding was being held in Blanc's church as Rom and Ram were getting married. Blanc tears up a bit.
Ram: We're so grateful, sis.
Rom: We can finally be happy.
Rom and Ram were being married by Trick.

Trick: Now girls, let us finish our vows with a lick!
Trick wraps them on his tongue.
Rom, Ram: Wahh!

End of dream:
Rom and Ram also has a fever as they were resting in the office where Blanc is.
Ram: Stop licking...
Rom: So gross...
Blanc: Same here. They've had several nightmares today. I want them cured as soon as possible.
Neptune: No worries! Histy remembered how to cure it! Right?
Histoire: Yes. There's a plant called the Shimmering Flower which instantly cures this kind of illness once it's taken.
Noire: Really? Where can we find it?
Histoire: There haven't been many of them around here lately. There might be some in the caves at the border of Lowee and Lastation, but I'm not sure if they're even there now.
Blanc: If there's even a slight chance that there are some...
Noire: We'll go search for them!
Vert: But even so, it's still uncertain that you'll find any. Do you have any more information?
Histoire: I've heard that there is one more place... But it's rather far away.
Sonic: Nothing's far away when you have me here.
Neptune: We'll go as far as it takes!
Vert: That's right. All for Nepgear and the others!
Histoire: Okay then. That place is...

In another dimension:
Sonic, Neptune, and Vert falls down from a portal as they were falling from the sky.
Sonic: Woohoo!
Neptune: Yahoo!
Vert: Who would've thought that this "faraway place" was another dimension? This is quite the surprise.
Neptune: I'm more surprised that Histy figures out he to create a gate to another dimension!
Sonic: Well, she's the smart one.
Neptune: Ah, look!
Sonic: Whoa!
Vert: That must be the other Planetune.Pururut should be there.
Neptune: Yeah, and... P-ko, too!
Neptune and Vert tries to transform, but they couldn't.
Neptune: Whoa! Huh? Huh?! What?!
Neptune and Vert falls down in the forest as Sonic lands on his feet.
Sonic: You two okay?
Neptune: Owie... I was pretty sure that I could transform before I landed. So why didn't I?!
Vert: Perhaps it's because we're in another dimension.
Sonic: Let me see.
Sonic tries to awaken, but he couldn't.
Sonic: Yeah, you're right. I can't awaken at all.
They heard a sound getting close by as a girl was walking through the forest.
Sonic: Hmm?
The three notices Blanc and another Vert as they were wearing different outfits.

Sonic: Huh?
Dem-Vert: Blanc! And... M-Me?!
Neptune heard someone below her as it was Noire.

Neptune: Nepu! Noire too!
Dem-Noire: Jeez! What the heck do you think you're doing, falling on people all of a sudden! Do you have any common sense at all?
Neptune: That's so weird... Noire and Blanc should be in the caves right now. I know! This is a fake Noire! In other words, Impostoire!
Dem-Noire: I'm not this "Impostoire." Moreover, I'm not a fake. Wait, who are you anyway?
Neptune: Me? I'm-
Pururut: Nep-chaaan! Sonic-kun! Veeeert!
Pururut runs to them.
Sonic: Hey!
Neptune: Ah, Pururun!
Pururut: It's great to see you again! I'm glad you didn't get hurt too bad coming here.
Vert: You must be goddesses from the other dimension that Pururut was talking about.
Blanc: We're the goddesses over here.
Sonic: Then, if you're them from another dimension, then...
Dem-Sonic: Huh?
Sonic: Hmm?
Sonic turns around as he sees another Sonic from another dimension.
Sonic: Ehh?
Dem-Sonic: Ehh?
Sonic, Dem-Sonic: Ehhh?! There's another me!
Neptune: Whoa, two Sonic's?
Pururut: I told you before that there's you from my dimension.
Sonic: Yeah, but I didn't think he'll be here.
Dem-Sonic: So you're the Sonic from the other dimension.
Sonic: Yep. So, I heard that you're with Pururut, right?
Dem-Sonic: W-What?! How'd you know?!
Sonic: Pururut told me.
Pururut: Hehe.
Dem-Sonic: Then I'm guessing you're with Neptune, huh?
Sonic: Huh?!
Neptune: Yep! We are!
Sonic: Wh-What...?!
Dem-Sonic: Pururut told me.
Sonic: *Sigh* Never mind that!

In the Planeptower:
Sonic and the others were on the elevator up.
Pururut: Huh? Didn't I tell you? There's a Noire, Blanc, and Vert in this dimension too.
Neptune: Really? You said that we had doppelgängers here?
Pururut: I did!
Blanc: So there's someone in that dimension like me?
Neptune: Yeah. She looks and speaks exactly the same. Even your personalities are identical.
Noire: Then I must have an equivalent over there too, right?
Neptune: Ah... So this Noire is lonely as well.
Noire: Excuse me?!
Sonic, Dem-Sonic: Hahaha!
Vert: "Large is justice", right?
Dem-Vert: Indeed. "Size rules the world!"
Vert, Dem-Vert: Double boing!
Blanc: She's twice as annoying today.
Neptune: This is the just kind of feeling I expected!
Sonic: Say, you got speed?
Dem-Sonic: Of course I do!
Dem-Sonic runs around the elevator quickly.
Sonic: Heh.
Sonic does the same thing.
Neptune: There goes them two.
Sonic and the other Sonic fist bumps each other.
They go inside the office as the other Histoire was there.
Dem-Histoire: Welcome!
Sonic: Hey.
Neptune: Whoa! Is this Histy?! She's so small and adorable!
Dem-Histoire: A-Am I, now?
Sonic: We met her before, Neptune.
Neptune: Hey, Pururun, let me have this Histy.
Dem-Histoire: Huh?
Pururut: Noooope.
Neptune: So greedy.
Neptune turns around as she sees someone.
Neptune: Huh?
Sonic: What is it?
They both looked to see Peashy hiding by the corner.

Sonic: There she is.
Neptune: P-ko...
Peashy: ...
Neptune: Come here, P-ko!
Peashy: Neptu...
Neptune: You can call me Neptune or Neptuna, either way is fine. As long as you're you. So come to me!
Peashy walks slowly towards her.
Peashy: Nep...
Peashy then runs towards Neptune.
Peashy: Neptuna!
Neptune: P-ko!
Peashy: Neptunaaaaa!
Neptune: P-koooooo!
Neptune goes to hug Peashy, but Peashy attacks Neptune.

Neptune: Guahh!
Sonic: There they go again.
Peashy: Hahaha! Neptune's still weak!
Neptune: I know this feeling all too well, P-ko.
Peashy: Huh?
Sonic: Hmm?
Peashy: Sonic!
Peashy runs towards Sonic.
Sonic: Hey, Peashy!
Sonic picks up Peashy from the ground.
Peashy: Hahaha!

In the mountains:

Sonic and the others stands on the edge of the mountain as they see a huge tower.
Vert: So that's where the Shimmering Flowers are.
Dem-Blanc: The Cursed Hell Devil Death Bloody Spectral Tower. They're at the top floor. There are 10,000 floors to be exact.
Vert: 10,000?
Neptune: That's a heck of a name, too. Are there super-strong monsters here?
Dem-Vert: Of course.
Dem-Noire: And if it weren't for you guys, we wouldn't even think of going in there.
Neptune: We...?
Pururut: We're going with you. You three can't transform, right?
Peashy: Me too! I'll protect you, Neptuna!
Neptune: Thank you, Pururun. Everyone. And P-ko, too...
Sonic pats on Neptune's head as she blushes a little.
Sonic: C'mon Neptune, why are you tearing up? Of course they're gonna help. They're us. Well, technically you don't have one here, but still...
Neptune: Thanks, Sonic.
Dem-Sonic: Looks like ill be the one protecting you, huh?
Sonic: Oh, don't you worry about me. I don't need my transformation to fight.
Dem-Sonic: (Heh, that's me alright.)
Dem-Histoire: Please don't forget, the gate back to your dimension will open in three hours.
Neptune: Huh?
Pururut: Here.
Pururut gives the three a watch as the timer starts.
Dem-Histoire: The next time that gate opens will be in three years. That means you need to make sure you get back to the Basilicom on time!
Neptune: But is it even possible to clear 10,000 floors in three hours?
Sonic, Dem-Sonic: Heh, three hours is more than enough. We both said it at the same time!
Dem-Blanc: There's a warp point near the final floor that will instantly transport you out of there. Is one-way so that should work.
Neptune: Sounds tough...
Sonic: Well we don't know unless we try, right?
Neptune: Yep. Now, let's go to the Cursed Spectral Tower!
Everyone: Yeah!

In the tower:
Neptune: Man, who would've thought there was a new elevator built that takes us directly from the 4th floor to the 9,999th!
Pururut: But still, a two hour elevator ride is pretty tiring.
Dem-Blanc: We can use the warp point to get
to the top floor from here.
Dem-Noire: It also says that there are strong monster on this floor.
Sonic: Strong monsters, huh?
Dem-Vert: And it appears that they have already come to greet us.

[There should be a GIF or video here. Update the app now to see it.]

A bunch of new monsters appear in the floor.
Sonic: Wow, I'm not kidding, they look kinda cool.
Dem-Blanc: They certainly do look tough. Time to flex my guns.
Dem-Blanc transforms as her outfit was red and white.

Dem-Vert: Allow to join you.
Dem-Vert transforms as her outfit was black.

Sonic: Whoa, cool color.
Dem-Blanc: We'll handle them!
Dem-Vert: You go on ahead.
Neptune: Thanks! We'll take you up on that offer!
Sonic: Let's go!
Sonic and the others run off as they see a warp portal.
Peashy: Two of those warp thingies, Beru-Beru!
Vert: Yes, that's right... Wait, Beru-Beru? Did you just call me Beru-Beru?
Peashy: Yeah. Beru-Beru!
Vert: Ah...
Sonic: Hmm?
Neptune: Huh? What's wrong, Vert?
Vert: This is the first time she has given me a nickname...
Vert starts to cry.
Sonic, Dem-Sonic: (What...?)
Neptune: Are you seriously crying right now?
Pururut: Vert sure is popular with the kids.
Dem-Noire: Here they come.
More monsters appear in the floor.
Dem-Noire: It's finally my turn!
Dem-Noire transforms as her outfit was grey.

Pururut: Me too!
Pururut transforms.

Dem-Noire: Have at us!
Pururut: I'll allow you five to proceed.
Dem-Sonic: You sure?
Pururut then gets closer to Dem-Sonic as he blushes a bit.
Pururut: Don't worry, my sweetheart, I'll be okay.
Sonic: Whoa.
Dem-Sonic: Pururut, you don't have to say that...
Neptune: Thanks anyway!
Sonic and the others keeps running as more monsters appear.
Vert: More of them!
Dem-Sonic: Let's go, Sonic!
Sonic: Right with you, Sonic!
Sonic and Dem-Sonic runs together as they both homing attack the monsters as they disappear. Sonic and Dem-Sonic keeps fighting one after another as Sonic and Dem-Sonic both charges up their punch.
Sonic, Dem-Sonic: Double Aura Punch!
Sonic and Dem-Sonic does a powerful blow knocking out all the monsters as they disappear.
Sonic, Dem-Sonic: Alright!
Dem-Sonic: Not bad, me.
Sonic: No bad yourself, me.
Neptune and the other two catches up as they see both consoles.
Sonic: Consoles?
Neptune: Whoops, that was close! This is the one that goes up.
They all touch the other console as it takes them to the final floor.
Neptune: We've made it to the final floor!
Vert: Where could those Shimmering Flowers be?
Sonic: We don't have much time!
Peashy: I'll look!
Neptune: Alright, let's split up!
Everyone else goes in different areas as they search for the Shimmering Flowers.
Neptune: Like a kangaroo! Boiiing!
Neptune jumps over a wall as she finds the Shimmering Flowers.
Neptune: Here they are!
A huge dragon was in the corner as is wakes up.
Neptune: Huh?
Vert looks around to find the Shimmering Flowers as she hears Neptune.
Neptune: Wahh!
Neptune was getting chased by a huge dragon.
Vert: Neptune!
Neptune: This guy's way too freaking big, let's bolt!
Sonic and Dem-Sonic hears Neptune and Vert.
Sonic, Dem-Sonic: Huh?
Neptune, Vert: Wahh!
Sonic: Neptune!
Dem-Sonic: Let's hurry!
Neptune: Where's Sonic and the other Sonic when you need them?!
Neptune and Vert runs away, but more monsters appear in front of them.
Vert: They're over here, too!
The dragon appears behind them as they were trapped.
Neptune: Here it comes!
Peashy: Neptuna!
Peashy runs towards them as Peashy transforms in her HDD form.

Peashy: Haaa!
Peashy dive kicks the dragon as it falls.
Neptune: P-ko!
Peashy: Neptuna, Beru-Beru, run for it!
Neptune: Thanks!
Vert: But where's Sonic? We can't leave without him!
Neptune: He has to make it!
Neptune and Vert sees the exit.
Neptune: Just a little more!
Peashy: Wahh!
Neptune and Vert sees Peashy getting dragged by a monster.
Peashy: Stop! Let go!
Neptune: Vert...
Neptune hands over the flowers to Vert as she takes them.
Vert: You better find Sonic and make it in time.
Neptune: Gotcha. P-ko, I'm coming to save you!
Peashy: Huh?
Neptune: Hey, you! Get away from P-Ko!
Peashy: Neptuna...!
Neptune: P-Ko!

In Planeptower:
Histoire was waiting as Vert and Pururut comes in.
Histoire: Pururut, hurry!
Vert: Wait, Neptune and Sonic aren't here yet!
Pururut: You need to bring those flowers to Nepgear and the others, right?

In the tower:
Neptune: Haaa!
Neptune uses her sword and slashes the monsters as they disappear. The salamander uses its tail as it attacks Neptune.
Neptune: Gahh!
Peashy: Leave Neptuna alone!
Peashy goes to attack, but the salamander grabs Peashy and throws her down.
Peashy: Wahh!
Neptune: P-ko!
The dragon charges up a fire ball as the dragon shoots it at Neptune.
Peashy: Neptuna!
Neptune: Sonic!
Sonic, Dem-Sonic: Not gonna happen!

[There should be a GIF or video here. Update the app now to see it.]

Sonic and Dem-Sonic both kicks the fire ball back at the dragon as it falls on the floor.
Peashy: Sonic!
Neptune: S-Sonic!
Sonic: Sorry I'm late, Neptune.
Neptune: No, you came just in time.
Dem-Sonic: It's not over yet!
Sonic: Neptune, Peashy, stay back. We'll handle this! And besides, I'm your CPU Warrior. It's my duty to protect you.
Neptune: Sonic...
Dem-Sonic: It's time to get serious!
Sonic: Huh?
Dem-Sonic: Awaken!
Dem-Sonic starts transforming as hit outfit was red.
Sonic: Whoa...
Dem-Sonic: Here.
Dem-Sonic gives Sonic enough power for him as he transforms.
Sonic: Wow.
Dem-Sonic: We only have a minute left or else you all stay here! Let's finish this quick!
Sonic: Yeah! Elemental Power! Ice!
Dem-Sonic: Elemental Power! Fire!
Both Sonics changes color as they have elemental powers. They run together as the dragon was going for a slash, but Sonic uses his ice to freeze its claws. Dem-Sonic jumps up and shoots fire balls at the dragon and the salamander as they get damaged.
Dem-Sonic grabs Sonic and throws him towards the salamander as he uses his kunai blades slicing the tail off.
Sonic: Sonic!
Dem-Sonic: Right!
Sonic and Dem-Sonic both charges up a beam from their hands.
Sonic: Ice!
Dem-Sonic: Fire!
Sonic, Dem-Sonic: Sonic Blast!
Both Sonics fires the blast as it combines together. Freezing the salamander.
Sonic, Dem-Sonic: Explode!
Both Sonics snaps their finger as the ice then explodes and the salamander disappears.
Sonic, Dem-Sonic: Alright! Just one more to go!
Neptune and Peashy runs towards them as they get their weapons.
Neptune: I'm gonna help!
Peashy: Me too!
Sonic: Neptune... Peashy... Heh, alright! We'll need all the help we can get!
Dem-Sonic: Let's go!
Both Sonics spins like a ball as blue orbs goes into them.
Neptune and Peashy runs towards the dragon as they both jump in the air.
Neptune, Peashy: Haaaa!
Sonic, Dem-Sonic: Ready... Go!
Both Sonics uses the light speed attack as all four attacks the dragon as it disappears.

In Planeptower:
Histoire: Opening the gate!
The gate opens as Vert goes in.
Vert: But what about Neptune and Sonic?
Pururut: It's Nep-chan and Sonic-kun. They'll be fine.
The gate vanishes as Vert goes back to their dimension.

In the tower:
The portal was closed as they couldn't make it back in time. Both Sonics and Peashy reverts back to normal.
Peashy: Neptuna! Sonic! Why'd you stay?
Neptune: You were in trouble. There's no way I'd leave you alone.
Sonic: And I was stuck in this maze with the other me. Plus, both you you were in trouble. I couldn't leave you two out there.
Peashy: But...
Neptune: Plus... I got to fight alongside you. We were completely in-sync.
Sonic: We all were.
Dem-Sonic: Gotta hand it to you, me, nice moves.
Sonic: You two me.
Both Sonics fist bump each other.
Peashy hugs Neptune.
The three other goddesses appears in the top floor.
Dem-Noire: Ah! They're still here!
Sonic: Oh, you three.
Neptune: Oh, good work everyone.
Dem-Vert: Now's not the time for that. What are you going to do?
Neptune: Well, we'll think of something. Something the main character would do, y'know?
Sonic: We'll get back eventually.
Neptune: Why don't we go back to the Basilicom for now?
Neptune touches the console to go downstairs, but it does nothing.
Neptune: Hmm? That's weird. Maybe the connectors are bad.
Dem-Blanc: Don't be so rough with it.
The console starts to glow as it sends them to the bottom floor.
Neptune: Whoa, that was a shock.
Sonic: Guys, look over there.
They all see a portal in the distance as Noire and Blanc enters.
Noire: Neptune?
Blanc: Sonic?
Sonic, Neptune: Huh?
Noire: And Peashy... How?
Neptune: Noire... Blanc... What? What, what, what?
Noire: No way! Is this me?
Blanc: I'm here, too. What's going on? And there's another Sonic too.
Dem-Vert: They're the Noire and Blanc from your dimension, I believe...
Neptune: Yeah...
Sonic: But how did they get here?
Neptune: Wait, did I just happen to discover an inter dimensional warp point? Man, I'm an awesome protagonist! Sonic, praise me!
Sonic: Huh? Uhh... You're an amazing protagonist, Neptune.
Neptune: Hehe, you're making me blush!
Dem-Sonic: *Whisper* She's always like that, huh?
Sonic: *Whisper* Yeah... But that's the reason why I care so much about her.
Dem-Blanc: We really are the same.
Blanc: Your clothes are very cute.
Dem-Blanc: So are yours.
Dem-Noire: I can't believe this. Hey, are you...
Noire: Am I what?
Dem-Noire: Are you lonely?
Noire: Excuse me?!
Everyone: Hahaha!

Back in Neptune's dimension:
Peashy was playing with Nepgear in the office as she has the phone on her.
Peashy: Hahaha!
Nepgear: Peashy, stop! That's a new one, I just got it!
Peashy: Yay, playing with Nepgear!
Nepgear: Fine, I'll play with you! Just please give it back!
Neptune: That's our P-ko. She's like the number one cure!
IF: I've never thought there would be two Sonic's here.
Sonic: Yeah, weird.
Dem-Sonic: Really weird.
IF: So, thanks to that malfunction, the gate will stay open now? Does that mean we can go in and out all we want?
Neptune: Guess so. But that's fine.
IF: There must be another Compa and me in that dimension.
Compa: Yeah. I want to meet them.
Pururut: I figured you'd want to, so I brought a picture of you two.
Pururut shows them the picture as they were kids.

Sonic: Whoa.
IF: Wow, we're kids?
Compa: You're so cute, Iffy!
IF: Y-You're the cute one...
Dem-Sonic: So me, you went on a date with her, didn't you?
Sonic: Huh? How'd you know?
Dem-Sonic: I knew it. So, what did you two do?
Sonic: Like I'm gonna tell myself what happened.
An alarm starts ringing as Pururut throws Nepgear's phone.
Nepgear catches it as Peashy runs to the kitchen.
Neptune: Huh? What's happening?
Compa: You'll see.
Peashy gives Neptune homemade pudding as it was smushed.
Peashy: Here. For you.
Neptune: What? Is this...
Compa: Peashy made it.
Peashy: It's my pudding.
Neptune: Wow, P-ko!
IF: There's enough for everyone.
Sonic, Dem-Sonic: Alright!
Neptune: Alright then, let's have a toast with P-ko's pudding! To Planetune. To our dimensions. And finally... To Gamindustri!

Everyone: Cheers!

In Lowee:
Blanc gets Rom and Ram to meet Dem-Blanc as they both hug her.

In Leanbox:
The audience were cheering as both Verts makes a book together in public.

In Lastation:
Noire was showing Dem-Noire cosplays for her to put on as Uni was hiding behind a wall.

In Planetune:
Peashy feeds Neptune pudding as both Sonic's were playing games.
Neptune notices Pururut making something by a shelf as it was Sonic and everyone as dolls.

That's it for the OVA!!! This was a really fun one to make, and I'll be doing the next one soon!!! Thanks for enjoys and see you guys later!!!