After the apocalypse, some survivors gather together to form a colony. One of them seeks help for his lover, who is still stuck in the outside world with the zombies.
A young idealist, Ethan, is left searching for his family while fighting the infected, Med-Ex militia and bloodthirsty marauders, and the ghosts of his past.
After being struck by lightning, CSI investigator Barry Allen awakens from a nine-month coma to discover he has been granted the gift of super speed. Teaming up with S.T.A.R. Labs, Barry takes on the persona of The Flash, the Fastest Man Alive, to protect his city.