Follows Barry Allen as he continues his mission to protect Central City from the sinister Hocus Pocus-- but this time, a new evil lurks beneath the city streets. The Flash plans to travel to Earth 2, but instead he lands in a world where everything is the exact opposite of what he knows. Including the villain in this town. Johnny Quick looks like the Flash. He runs like the Flash. He... may be the Flash? But the only way for the real Flash to get home is to beat this superspeedster at his own game.