David Dunn is the sole survivor of an horrific train crash that killed 131. Everyone, especially David, is wondering how it could be possible. Soon, David is approached by comic book specialist Elijah Prince, who confronts David with an incredible theory that just might explain the situation.

When a troubled couple escapes to their rural farmhouse for a weekend of reconnection, they realize that their ability to save their marriage will determine the fate of humankind itself.

Worlds collide when Barry uses his superpowers to travel back in time in order to change the events of the past. But when his attempt to save his family inadvertently alters the future, Barry becomes trapped in a reality in which General Zod has returned, threatening annihilation, and there are no Superheroes to turn to. That is, unless Barry can coax a very different Batman out of retirement and rescue an imprisoned Kryptonian, albeit not the one...