DC's Legends of Tomorrow, or simply Legends of Tomorrow, is an American superhero television series developed by Greg Berlanti, Marc Guggenheim, Andrew Kreisberg, and Phil Klemmer, who are also executive producers along with Sarah Schechter and Chris Fedak; Klemmer and Fedak serve as showrunners. The series, based on the characters of DC Comics, airs on The CW and is a spin-off featuring characters introduced in Arrow and The Flash along with new characters, set in the Arrowverse, the same fictional universe. The series premiered in January 2016. Legends of Tomorrow has been renewed for a fourth season which premiered on October 22, 2018.
Time Master Rip Hunter goes rogue after Vandal Savage murders Hunter's family. Intending to stop Savage, Hunter recruits a team consisting of Ray Palmer / Atom, Sara Lance / White Canary, Martin Stein and Jefferson "Jax" Jackson, who combine to form the hero Firestorm, Kendra Saunders / Hawkgirl, Carter Hall / Hawkman, Leonard Snart / Captain Cold, and Mick Rory / Heat Wave. They discover that the Time Masters are backing Savage in his domination of the world in 2166 to facilitate a successful repulsion of a Thanagarian invasion. Due to Snart's sacrifice, the Time Masters are destroyed.