The first preview for the major crossover event between Flash, Arrow, Supergirl, and Legends of Tomorrow has been released.
The annual CW event is titled 'Invasion' and will be a three-part crossover. It is based upon the 1988 comic book miniseries Invasion and will closely follow the plot of the miniseries, which saw a group of allies gathered by The Dominators who take to Earth to eliminate the metahuman's that are on Earth. The event will begin on November 28th. Check out the preview below.