[Past-Barry has reappeared and is confronting Barry in front of Team Flash.]
Wait a second, how do we know which one's the real Barry?
PBPast-Barry
Dude. Okay, I've watched Wrath of Khan with you, like, five times.
[pointing to Barry] Imposter!
Barry
Yeah. And every time at the end, you turn to me and you say "I have been and always shall be your friend".
[pointing to Past-Barry] Ah ha! You imposter! [looks at both Barrys, confused] What is going on here?
It's like right now I'm Anakin Skywalker. I got the midi-chlorians. I've got the goods. The force is strong with me. That is something I can feel. But if I start opening breaches into other worlds, doing all this other crazy stuff Reverb was doing, then... what if this how I become Vader?
Barry
Dude, you're never going to become Vader.
That is what happened to Reverb. He learned how to use his abilities, and when he felt that... when he felt that power... he succumbed. To the dark side.
Barry
Look, I get it. I really do. Every time I've learned a new ability, I've been terrified about what it might mean for me. What it could do to me, you know? But you were there with me when I learned how to run on water. When I ran up a building or travelled through time. Just like I'm gonna be there every step of the way with you. You got something that Reverb never had, and that's Caitlin and Joe and Iris and Wells and me. Friends. We're gonna look out for you. And we're more than just friends, we're your family.
[Using images of Zoom's parents, Barry is able to capture and unmask him]
How'd you figure out who I was?
Barry
You made a mistake: you told Caitlin who your doppelgänger was.
I had to do something to get her to stop trying to ... fix me. She's a smart girl. [pause] And that I was Zoom?
Barry
The Velocity-9. When you run fast enough, it turns a speedster's lightning blue. We would've helped you. We would've done anything we could to save your life.
Barry
Caitlin found you a cure!
A temporary one! I'm dying, Barry! There's only one thing that can get me what I need!
Barry
And you just don't care; how many lives you've destroyed trying to get it? How many people you kill?!
No, I don't! That feeling was taken from me a long time ago. [longer pause] We're not so different, you know. What happened to us when we were kids; you could've just as easily become me.
Barry
No. I'd never become like you.
I gotta say, that was smart, using my parents against me. Ah, family: it's such a weakness.
Barry
Not for all of us.
Well, that's where you're wrong. It's time I get what I came for.
Barry
[chuckles] You're not getting anything from me. You're not getting anything from anybody ever again, on any Earth.
[quietly] You can't lock up the darkness.
Barry
What did you just say?
[Zolomon's eyes turn black, and his voice becomes deep and demonic]
You can't lock up the darkness.
Without Caitlin here, I can't really analyze the cells on a molecular level to see what we're dealing with here.
You know, I might actually be able to help.
Bio-chem was one of my majors in college.
Barry
One of your majors? How many did you have?
Five. [off everyone's reaction] What, is that not common here?
Girl, no, that is not common anywhere.
SFSpeed Force Iris
We thought you'd find this place and our appearance less upsetting. Yet you seem upset.
Barry
My friends, my city... my whole world is in danger. Zoom is on a rampage with the power that he stole from me, and you are keeping me here.
SFSpeed Force Iris
You were given a rare and precious gift. And you rejected it.
Barry
No, I did not reject it. I gave up my powers to save someone's life. To be a hero. I nearly killed myself trying to get them back when you brought me here, wherever here is.
SFSpeed Force Iris
That's not what we meant.
Barry
Look, if you would rather have given these powers to somebody else, why did you give them to me?
SFSpeed Force Iris
Because you're the Flash, Barry.
Barry
I'll do whatever it takes to stop you.
If only that were good enough. 'Cause here's the thing... I know you. I know you, I know what's holding you back. You and me, we're really just the same person.
Barry
[scoffs] Yeah, you keep saying that, but it's not gonna make it true.
You'll see, we are. Same tragic background. Same reason for running. Same desire to be the fastest, to be the best. The difference? You think your anger is dirty somehow. You want to be seen as pure. The hero. Doesn't it get exhausting? [shouts] Doesn't it get exhausting, Barry? It was exhausting playing Jay, believe me.
Barry
I'm not pretending.
[Barry is about to run at Zoom when, in the window, a building is seen crumbling.]
Now if it were me, I'd let that building tumble without a second thought. But you? You'll never let that happen, will you? That's why I'm going to beat you, Barry. Because you always have to be the hero. And while you're playing the good little boy,... I'll be busy winning.
Barry
Listen, I've been thinking about Wally some more.
Are you gonna talk to him again?
Barry
No, I'm not.
Barry
Because he's your son, Joe.
Barry
No, what I mean is, he's got your values. He's got your inner drive to help people do what's right. We're supposed to think we're something we're not until we become that thing. That's that path that Wally's on. I'm not gonna stop him from being the hero he's gonna become. I really don't think you should, either.
[in good humor] I can't wait until you have kids and they torture you. I'm gonna laugh in your face.
Barry
[amused] All right, Gramps.
Barry
What?
My grandkids are gonna call me "Pa-pa".
Barry
[walking away laughing] All right.
Barry
Zoom's still out there. We need to come up with a plan.
The man can crack open breaches to Earth-2. I mean, if he can do that, what else can he do that we don't know about?
Barry
Right after he killed his time remnant, he told me I was "almost ready."
Barry
I don't know.
Yep. Classic psychopath. Why can't they ever just say what they want to do? We also have to figure out why I keep vibing Earth-2 being ripped to shreds.
It's like I'm watching Transformers in 4-D, but, like, ten times more realistic and with much better acting.
Barry
[to Wally and Iris] Don't worry. I'm gonna save your Dad.
No. You're gonna save our Dad.
Barry
Get back to S.T.A.R. Labs. It's safer.
We're not going anywhere. You got eyes and ears right here.
Either he goes, or we all die together.
[Barry starts to go.]
Wait. Barry... kick his ass.
Barry
What are the rules?
One lap around the inside of this loop will produce about 1 gigawatt of energy, and I need 500-plus to power the Magnetar enough to do the job. Once it's full, I win, because there is no stopping it.
Barry
So all I have to do to beat you is stop you before that happens.
Yep. It's that simple. But if at any point, you decide you don't want to race anymore, dear old dad number two is a dead man, as well as your little fan club.
Barry
They're not my fan club. They're the reason that I'm running. Why I'm gonna beat you.
[scoffs] Let's see what you're made of, "Flash".
[They both put on their masks and get on their marks.]
Barry
Just say when, Zoom.
[in altered voice] Run, Barry. Run!
[Both take off running.]
Okay, so you ran back in time and made a copy of yourself?
Barry
Well, uh... basically, yeah.
It's called a time remnant.
Barry
It's not... something that I can do every day, but I needed a way to draw the Time Wraiths out of the Speed Force, hoping that they'd be more upset at what Zoom had done than they'd be at me.
[to Iris] Is that what I look like when they start talking about science?
Don't worry, Wally, it'll get easier to understand.
But how does that even work?
Barry
Same way Zoom did it. I ran back in time moments before I left. It's the only way I could be in two places at once.
[still a bit confused] O-okay, so the-the time remnant, it's still you.
Barry
Yeah.
Barry
I...uh, he was willing to sacrifice himself for all of us.
That's how much he loved us.
You know what, we'll just forget about it. Uh, Barry, I'm glad you're okay.
Barry
Can't stop thinking about my dad's doppelganger. Seeing him, knowing that he's out there, that should've made it easier. It doesn't. It just made me miss him even more.
I can't even imagine how hard that must have been.
Barry
We just won. We just beat Zoom. Why does it feel like I just lost?
Because you've lost a lot in your life, Barry. More than most. But... maybe you and me, seeing where this thing goes, maybe that can give you something for a change.
Barry
That's all I've ever wanted to hear you say. And I wish that I was in a place where I could try that with you. But I feel so hollowed out inside right now. I feel more broken than I've ever felt in my life. If I'm ever gonna be worth anything to you, I need to fix what's wrong with me. I need to find some... some peace.
Barry, listen to me. You waited for me for years. You let me get to a place where this is possible. So I am telling you: I am gonna do the same thing for you. Wherever you need to go, whatever you need to do... do it. And when you get back, I'll be here.
Barry
Okay.
[Barry and Iris kiss.]
Barry
I love you, too. And I always will.