Barry has been at Star labs doing everything, reading anything that he could find in order to become the fastest man alive so that when they find a way to Earth-2, somthey can end Zoom.

"Can we please get rid of Jay's helmet? It's giving me daymares." Cisco asks his friends.

"Sorry, it keeps me motivated." Barry tells him.

"Yeah, even I find it creepy we still keep it around." Peter states to Barry.

Cisco carries all the books he could carry. "This is all I could find even remotely related to increasing speed. How are these supposed to help apply the speed equation to you, or help Peter?" Cisco asks them.

"The answer to getting faster has to be in here somewhere." Barry answers.

"And I've been updating my suit so I can fight off the dark speedster." Peter tells Cisco as he enters the labs to start experimenting with a new web formula to keep a speedster as fast as Zoom trapped for good.

Caitlin then enters the cortex from her labs. "I think I found something interesting." She tells them.

"Is that a good interesting, or bad interesting?" Cisco asks her.

"After running some comparative data, it appears that you, Reverse Flash, and Zoom are moving your legs at essentially the same speed." Caitlin explains what she was able to put together.

"Then why are they so much faster than him?" Peter asks, just when the web fluid explodes onto his face.

"Best I can tell, with each stride their feet spend less time on the ground, this propelling them forward much faster." Says Caitlin.

"Well, I gotta make up that difference somehow." Barry says and goes to dinner with Joe.

-

Peter is just pulling off the web fluid off of his face from another chemical reaction as Caitlin approaches him. "You need some help?" She wonders as he just sighs.

"Yeah, there's a bottle of the web dissolver over by my suit. I keep a bottle on me just for emergencies like this." Peter tells her and she starts dripping it on some of the webbing and it starts dissolving off of him. "Thanks, Cait." Says Peter.

"No problem." Caitlin replies while smiling when they hear Barry and Cisco approach them.

"You mean the old Harrison Wells? As in Eobard Thawne?" Cisco asks and that's getting their interest. "Oh, that's rich. Hey, guys, Barry here wants to go back to last year to talk to the Reverse Flash to learn how to get faster."

"How are you gonna do that?" Caitlin asks him.

"By running to a time last year. And to avoid any Back to the Future paradoxes, I'll knock my past self out. It's not like he'll see me coming." Barry explains his plan.

"That's the craziest plan I've ever heard. And I have had my fair share of crazy." Peter states to him.

Barry explains that Thawne is his best chance of getting faster and they don't have any better ideas and decide that they should go through with it.

-

They put together when would be the best time for him to appear and decided to go with when Hartley showed up.

"Okay, you're going back when Wells was distracted by the return of Hartley Rathaway. This is the first time we found out wells knew the accelerator might explode, and we were all angry with him, so anything that might seem odd about your behavior, he should understand why you're acting that way towards him." Peter explains to him.

"This is a tranq dart that should knock the past you out for about six hours l which lines up perfectly for when you're going back," Caitlin explains while handing it to him, "because not much was happening until Hartley attacked the Cleaveland Dam that night, so that should give you time to learn what you need and return."

"Also, you cannot tell us the truth about Wells, no matter what." Cisco warns him, because everything could be destroyed.

-

Barry gets ready, and opens a time portal in the accelerator and starts going back to last year. But on his way there, he sees some dementor like creatures flying at him and he gets out of the portal at the wrong moment. He's too early.

Peter had just webbed up Rathaway's hands together. "Clever Spider-Man. You know my name. I know some names, too." Hartley tells the two heroes who are standing above him.

"This is not good." Barry states as he hopes Peter doesn't sense him.

Hartley just keeps going on with the same speech he gave them the last time. "Caitlin Snow. Cisco Ramon. Peter Parker. Harrison Wells."

Barry's suit frequency starts interfering with his comms and past Barry notices him.

"You okay, man?" Peter asks Barry as he's staring off into an alley.

"I can hear their radio waves. Emanating from your suit. About 1,900 megahertz. Are they on the other end listening? Will they hear you die?" Hartley asks them as he stands back up.

"Buddy, your hands are a little tied at the moment, man." Peter tells him while shocking his gauntlets with a taser web. Peter turns to Barry to go back to Star labs and sees he's he's gone.

"Where'd he run off to?" Peter asks while looking around for the speedster.

-

Barry and his past self start fighting in the alley so he can get on with the plan.

"I don't understand, you're me." Says past Barry, confused since he has yet to time travel.

Barry stabs him with the leg with the tranq. "I'm sorry, but I have to do this." Barry says to himself and takes his emblem then replaces it with his own.

He then speeds back to Peter and Hartley. "What did you do? Go for a bathroom break?" Peter asks him.

"Looks like you're not as smart as everyone says, huh?" Barry asks Hartley, ignoring Spider-Man.

"Smart enough to have figured out who Harrison Wells really is. You see, I know his secret." Hartley tells him and Peter is confused, but Barry already knows so he's not surprised.

-

They bring him back to Star labs and everyone is gathered at the pipeline as Peter is scanning Hartley again.

"Scanners picking up foreign metallic objects in his ears." Peter tells Cisco.

"Come on, take them out." Cisco tells Hartley.

"I can't, I suffered head trauma when Star labs exploded. My hearing was severely damaged. Without these, I am in pain you can only imagine." Hartley tells the team and Barry remembers that he uses them to escape later on.

"Peter, see if the devices in his ears are generating any low level electromagnetic pulses." Barry asks him.

Peter just looks at Barry confused. "You want me to scan for E-bombs?" Peter asks his speedster friend.

"I just...don't you think that's what was interfering with the comms?" Barry asks and Peter sees that could've been a possibility and does exactly that, and wouldn't you know it he found something.

"Trying to pull a Joker us?" Peter asks Hartley. "Honestly, don't let him learn you tried taking his trick. He'll just make you more of a joke. You trying to blow a hole in our fancy lab?" Peter asks as Wells approaches and speaks in Latin.

"Pump in some sound stimuli to counteract his tinnitus. Then we'll make some non-explosive replacements for him." Wells asks Peter and he does as he said and Caitlin asks him to remove the pieces.

Wells and Barry go toward the cortex.

"That was quite the observation about Hartley in there, mr. Allen." Wells tells him.

"Yeah, it just seemed too easy taking him down, you know? I mean, he must've known Peter could stop his gauntlets for how many times he went up against Shocker." Barry states.

"Well, the likely reason is you're getting faster." Wells says and Barry explains about how he's been trying to get faster.

-

Peter was walking down the halls of Star labs when his head starts spinning and his senses have started going crazy ever since they took down Hartley. He doesn't know what can be causing this since it's never happened before.

He grabs his head in pain and slides to the floor. "Peter, you okay?" He hears Caitlin asks, worried about him.

"My head..my senses are in overload." Peter tells her and she helps move him into the cortex as they see Barry speed off and his senses start calming down. "Okay, that's weird."

"What, you're okay now?" Caitlin asks confused as he is.

"It's like my senses are reacting strangely to Barry." Peter says and that gets Wells confused. Later on they hear that the CCPD was attacked by a ghost.

Barry comes back after having a run in with Eddie and Joe and sees they're working on finding it.

"I actually saw it earlier today, when I was running to stop Hartley." Barry tells them since and Peter wasn't with him, so he can't say if it is the truth or not.

"Why didn't you tell us this sooner?" Peter asks him.

"I didn't know what it was. I thought it was some sort of illusion. I don't know." Barry explains to him.

"Okay, we need to find it before it hurts somebody." Caitlin says and they ask if Cisco can track it.

"What is it with you guys? It's like you think I have ESP or something. I can't just magically sense where things are." Cisco states while Peter moans.

"Don't accidentally predict something again, Cisco, please." Peter begs of him remembering how he said the accelerator would explode, and it did as soon as he mentioned it.

"What can you do, Cisco?" Wells asks him.

"I'm thinking I can reconfigure the Star labs satellite to look for it. It might take some time." Cisco says and Wells calls Barry out of the room to talk about what he figured out.

Wells took Barry into the Time vault so he can have a private conversation where he can hide from Peter's senses and hearing. While Peter is working on his brain with Caitlin helping him to figure out what's wrong and Cisco goes to talk to Hartley about the gauntlets and his non-explosives.

"Your brain senses seem to be reacting to some strange interface. It's like a secondary source is messing with it." Caitlin explains looking over what she can find.

"It's just...my senses have never gone crazy like this before." Peter explains, not understanding what his senses are trying to say to him. That was until the labs begin shaking and his senses go off.

They look to see the Time Wraith Come is to the labs and shrieks as it flys towards them. Peter shoots a web at it to try to stop it and it goes straight through it. "Worth a shot." Says Peter as they run through the halls.

"Cisco, it's here!" Caitlin shouts as they run into the pipeline.

"Inside the cell, now." Cisco calls for them and the three of them enter Hartley cell as the Time Wraith starts banging against the doors.

"Isn't this fantastic?" Hartley asks them.

"Look, were gonna be safe in here." Cisco informs him. "These cells are.." Cisco gets interrupted by the creature breaking the window.

"Impenetrable?" Hartley asks as Caitlin shouts for Barry or Wells as they seem to have disappeared.

"Anyone got any ideas?" Peter asks the people in the room.

"Yeah, I actually do. Give me those." Hartley says, referring to his gauntlets.

Since they see they don't have any other plan, they see what he he can do.

"These cells have speakers linked through Star labs. I rigged these gauntlets to emit a...destructive signal if ever they're disarmed." Hartley says and starts finding whatever frequency the Time Wraith is on and is sends a killing sound, and the Wraith goes flying off.

-

"I'm sorry we didn't come sooner." Barry apologizes to the team as he and Wells return to the cortex.

"It's all right. Inky's gone. I don't see anything anywhere." Cisco assures Barry.

"So the two places this thing has attacked are here and CCPD. What's the connection?" Caitlin asks and nobody seems to know.

"Me, actually. I just don't know why." Barry tells them.

Peter did a quick scan across the city and nothing came up. "Satellite isn't picking up anything." He informs then while his brain still seems to be itching, the closer Barry gets to him.

"We need to find a more permanent solution to this problem." Wells informs them. "Start by repairing Hartley's gauntlets. That's about as good a step as any." Wells says and the three of the members leave.

Barry and Wells wait until they're all out of hearing range. "You don't know how to stop a Time Wraith?" Barry asks him.

"No, none of us do." Wells replies to him.

"We?" Barry asks, confused.

"Speedsters. We're not the only two out there, you know?" Wells explains to him.

"This isn't the fist time I've time traveled, how come this is the first time I'm seeing one of these things?" Barry asks Wells.

Wells stands out of his wheelchair and up against Barry. "Because you ran out of luck. And Time Wraiths hate it when speedsters manipulate the timeline, and now that things gonna do everything it can to end you. So here's the plan. You're gonna go to CCPD. See what you can find out that can help us stop it, I'll do the same here."

"What am I supposed to be looking for?" Barry asks, not seeing how he can find anything from a ghost.

"You're in forensics. Figure something out." Wells says and that means they'll have to put the speed equation on hold.

-

"So the gauntlets can't be fixed?" Peter recaps what Cisco just told them.

Cisco looks at the gauntlets that are destroyed beyond salvage.

"No, their electron guns are fried. The wave tubes destroyed the amplifiers." Cisco answers him. "I don't know how to manipulate the frequency variance." He says, and they get ready to talk to Hartley about how he did it when Peter's senses go off and past Barry Allen returns, and Peter's senses seem to be going haywire.

"Where is he?" Barry asks the team who don't understand him. "Where's the other Flash?"

They're still not following when Barry returns to Star labs.

"Okay, That makes some sense, sadly." Peter states since his senses seem to be calming down nw that they realize their are two Barry's.

"Wait, I'm sorry...who are you?" Asks Past Barry.

"Who is he? Who are you?" Caitlin asks past Barry.

"What? I'm Barry." Barry states to her. "I'm Barry. He's..."

"Doppelgänger." Cisco and Peter say together.

"No, not yet." Barry assures the two. "I am you, Barry. Just...not you." Barry tries explaining to the group.

"Wait a second, how do we know which ones the real Barry?" Cisco asks, trying to figure it all out.

"Dude, I've watched Wrath of Khan with you and Peter at least five times." Past Barry informs Cisco who points to the future Barry.

"Imposter!" He states.

"Yeah, and every time at the end, you'd turn to us and say, I have been and always shall be your friend to me and Peter." Future Barry tells Cisco.

"You, imposter!" Cisco says pointing to past Barry, as he's getting confused out of his skull. "What is going on?!"

"Guys, I'm sorry. This was not supposed to happen. The tranq Caitlin gave me was meant to last longer than this." Barry tells them.

"I did not give him a tranq dart." Caitlin defends.

"Wait, that's why you suddenly disappeared when we were fighting Hartley." Peter realizes.

"Okay, no, not you, not you Caitlin, the Caitlin from the time I'm from." Barry explains and Wells is getting angry.

"The time you're from?" Past Barry asks him.

"I think what he's trying to say is that he's from the future." Wells recaps to them and they're shocked to hear Barry can time travel.

"Okay, now I'm officially jealous." Peter states since it seems Barry's becoming overpowered. "Wait, is that why my senses were driving my head crazy?" He asks since it makes sense now, because his senses never had to deal one of the same guy from different timelines before. They were confused on who was the real Barry.

Cisco then realizes there's some differences on their suits.

"That explains the white on the symbol. Wait, suppose we now change your emblem. Will it be because we got the idea from this? That would mean-" Cisco was going on when Wells tells him and future Barry to stop talking and explains the Time Wraith to past Barry.

And the only thing they can do is to send Barry back in time. Before he does that, Wells gives him a drive that he can use to heighten his speed when he gets back. He also warns them that they have a year to plan a way on stopping it.

-

Barry speeds off and the Time Wraith begins catching up to him, so Past Barry sped in and tackled the Time Wraith to give his future self some extra time to get through the portal.

He was able to get through and return seconds after he left.

"It's coming!" Barry warns them all.

"That was fast, even for you." Peter says to the speedster.

"Did you figure out a way to stop it?" Barry asks and they take it as a yes as the Time Wraith enters the cortex.

Peter picks up Shocker's gauntlets he confiscated last time he escaped and shot a shockwave at the Wraith, and nothing happened.

"We thought we did!" Cisco says as the Time Wraith starts attacking Barry, when another shockwave hits the Time Wraith And he turns to dust.

They look to see Hartley wearing his fixed gauntlets.

"I suddenly realized. Low frequency, high intensity." He tells them and they see that's why Shocker's failed. "Hey, Barry. How was your trip?" Hartley asks as Barry is surprised he's working with them.

"So aside from the Time Wraith that nearly killed us, how did it go?" Cisco asks him.

"It was interesting. And so far, it's a good interesting." Barry tells them as Hartley leaves for dinner with his parents.

They all head into the Time vault and Barry pushes it inside the port and it activates, showing them what to do with tachyon enhancements for Barry.