When Worlds Collide

Your greatest enemy

In the pipeline Barry and the others are watching Prometheus as he removes his mask and Oliver, Sara and Felicity look like they've just seen a ghost. "Oh my god." Felicity says, seeing his face.

"Oh my god, what? Felicity, you know this guy?" MJ asks Felicity.

"That's Tommy Merlyn." Sara explains. "He died eight years ago." Felicity replies.

"Oliver, who's Tommy Merlyn?" Barry asks his friend.

"Thea's other brother...and best friend." Oliver explains in complete shock he's alive and moves closer towards the cell. "We're gonna need a moment alone." Oliver tells them and they leave them and hear back for the cortex.

"He's a crony." Mick tells them and they're confused. "Anachronism." Stein says, correcting him. "That's what I said." Mick states. "Lately we've been dealing with anachronisms. It's people and things displaced throughout time." Sara explains.

"Okay, but why would Nazis from 1945 wanna crash someone's wedding?" MJ asks, not getting their plan.

"Crab legs. They were delicious." Mick says and nobody couldn't argue with him.

"Well, MJ has a point, though." Alex says from across the room. "If they're out of time, they would be targeted the military or law enforcement."

"Tommy was plucked from the past and put in the Prometheus wardrobe? That doesn't make any sense." Felicity tells the group as Peter and Barry return and Peter is holding their suitcases.

"Hey, where'd you go?" MJ asks them.

"Well, were going into a fight, might wanna dress right." Peter says and hands her the suitcase with her Spider-Woman suit and he has his with his Iron-Spider suit.

"It does make sense if we're not dealing with an anachronism." Caitlin states to them. "Visitors from another earth?" Barry asks her, seeing what she's thinking. "Whoa. There are more than one?" Jax asks them.

"Well, were from Earth-616, and our friend told us theirs actually 675 Earth's in total." Peter tells them.

"Though I'm hard pressed to think of one where Nazis are ascendant." Stein informs them.

"I can." Harry says and they turn to look at him leaning against the wall. "There's a 676th earth, and it's called Earth-X." He states and goes over to the computers and shows footage of the Nazis winning WWll, and even the death of Steve Rogers, Captain America.

"It doesn't have a designation, and you need to know what you're looking for to find it, because it's a place so awful, so horrific, no sane person would ever travel there." Harry explains to them as they look at the screens in horror. "It's basically earth. Same history, same timeline, with one crucial and critical difference."

"Let me take a wild guess. Nazis invented the atomic bomb before the United States did, and were more than happy to use it." MJ guesses and Harry states she's right.

"That and perfected the formula for super soldiers, the destruction Red Skull brought with. But, yes, the Nazis won the war, and New York, London, Paris, Moscow...all obliterated. The SS set up outposts not only all throughout Europe but also all throughout the Americas, and hitler continued his brutal reign aided by prime ministers and presidents until his death in 1994." Harry finishes explaining.

"Now they're not happy ruling just one earth." Felicity says and leaves for some air.

"We have to find them and stop them." Kara states. "I mean, do you think they're using breach to hop between worlds?"

"Well, they could have sorcerers like us on our earth." MJ tells them. "That or they're operating from a staging area somewhere in Central City or close by." Alex interjects.