This year’s Arrowverse mega crossover promises to be bigger than any before, as both the Legends of Tomorrow and the newly introduced Supergirl will be joining the mix. The four-part event will air from November 28 through December first, with one episode airing each night on one of the four individual shows. The crossover will adapt the 1980 Invasion! storyline from DC Comics, where a hostile alien race known as The Dominators invades Earth.
A newly released trailer offers a better look at the Dominators’ arrival, as well as the aliens themselves. Check it out here: