Inertia looked up as the four speedsters stood before him, gathering energy to run, "ahahaha! Do you think you can stop me?! I have the speed of four speedsters in me!"

"Not for long." Impulse murmured to himself, "you have my friend's speed, so I'll be taking it back now."

"Heh." Inertia smirked as he himself stood up, "then come and get it."

Impulse's blood boiled as he gave the three others the one command: "run."

Just like that, lightning crackled as they took off. Impulse ran directly for Inertia while the others circled them, waiting for that opening to grab the device from Inertia's pocket.

"Gh!" Kid Flash winced at the sudden and unexpected surge of electricity that ran through his body.

"This should be enough for your body to handle. Just don't over-exert yourself if it can be avoided." Jet nodded, "be careful out there."

"It can't be avoided." Kid Flash chuckled weakly as he closed in closer to Inertia, watching between his and Impulse's fight for the right opening, "now!"

He dove forward towards Inertia, hand extended towards his zipped pocket.

Zipper?! Crap!! Kid Flash gritted his teeth as focused all the energy of the speed force into his hand on a cellular level. He vibrated the molecules in his hand to go through the cloth, then focused the control on the palm of his hand to grab the device and rip it out of his pocket. With a tumble roll past the fight, Kid Flash wiped the sweat from his forehead and held his fist up, "Impulse!"

"Wh-what?!" Inertia glanced over his shoulder, "wh-when did--"

"Alright, Kid!" Flash called.

Alacrity smiled, "you got this!!"

"Wh-what?!" Inertia looked forward at Impulse, who stood eye-to-eye with him. Yet, even then, even after their past, he didn't recognize him.

"Thad! Hey, Thad!"

This... Inertia trembled. This isn't the Bart I knew... This one is so... cold...

"Who..." Inertia narrowed his eyes at him, "who are you?"

The brunette smirked as he set one hand on Inertia's shoulder, leaving him frozen in place, and set his fist against Inertia's chest, "you know me, Thad. Don't you remember? I'm Bart Allen, the fastest man alive."

Vibrating the molecules in his hand, Impulse drove his hand into Inertia's chest, lightning crackling all around them as the Speed Force left Inertia and went into Impulse. Both speedsters cried out in pain as the transfer continued.

"B-Bart!" Alacrity started to run up to them before Flash stopped her.

"Be careful!" Flash yelled to her over the crashes of the lightning strikes.

"Barry!" Kid Flash ran up to him, "this is getting out of hand! At this rate, this is too much for the kid to handle!"

Flash peered through the chaos of lightning at Impulse, and sure enough, he was in pain.

"This is the speed of four speedsters, just as Thad said." Alacrity looked at them, "I don't think Bart's body can handle that... Someone has to do something! Cut it off or something!"

Flash watched as his grandson nearly overloaded with energy, a pain ripping at his chest. He shut his eyes and turned to Kid Flash, "hey, Kid, open the time machine."

"Wh-what? Barry--"

"Just do it! To a time far away from this time or our time."

Kid Flash quickly fumbled with the small device before opening portal to another time period, "there. What are you planning?!"

"This." Flash ran forward towards the two speedsters and grabbed Impulse's arm, wincing at the pain from the bolts, "B-Bart!!"

Impulse, gritting his teeth, tears in his eyes, glanced over at the older speedster, "wh-what are you doing?! Gramps!!"

"Sorry, Bart..." Flash chuckled weakly as he grabbed Inertia's arm, letting go of Impulse's, "see ya... I'll be back... In a flash."

With that, before Impulse could say anything else, Flash tore Inertia from Impulse's grasp, ending the whole process and leaving Impulse on the ground, gasping for breath and trembling.

"G-gramps!!" Impulse tore his goggles off and tried to stand as his blurred vision stared in horror.

Flash, grip tight around Inertia's arm, saluted his goodbye to his grandson as he took off into the portal, the portal closing behind him.

After that, everything was silent with the exception of the howling wind.

Impulse fell to his knees. He forgot all the pain he was experiencing just a minute ago.

"Wh..." Alacrity tried to speak, but her words wouldn't come out, "wh-what just happened?!"

Kid Flash's hands shook as he stared at where the portal was, the time machine device fell to the ground, he didn't even notice, as tears silently poured down his face.

"Guys?!"

The rest of the Alpha squad ran over.

"We took care of Vandal Savage from here." Nightwing explained, "what happened? Where's Inertia? And... And Barry?"

Alacrity didn't answer. Kid Flash didn't answer. No one said anything. A couple minutes later, Impulse just stood up, tears streaming down his cheeks, and looked at the gray sky. Nothing had changed the future.

"We... We lost. I failed..."

My mission from the very beginning, the reason I went back to the past was to save my grandpa.

But I failed.

He's gone. It all happened so fast. Too fast.

The Flash is gone... He's not coming back.