Check Out The Promo For The Arrowverse Crossover “Elseworlds”

A brand new promo for the upcoming DCTV crossover event has been released. This new crossover between Supergirl, Arrow, and The Flash is titled “Elseworlds” and it will kick off on December 9.

In this new episode, Oliver and Barry wake up in a world where their lives have been switched by an evil scientist. To make matters worse, Kara also wakes up to her world changed to the point that her dear cousin isn’t exactly fighting on the side of good.