THE FLASH is the story of a superhero misusing his superpower. Barry Allen (Ezra Miller) is learning to adjust to his life as a superhero as Flash and a rookie forensic investigator. His father Henry (Ron Livingston) has been wrongfully jailed for the murder of his mother Nora (Maribel Verdú).… One day he realizes that he has one more power, of going back in time. He realizes that he can use this power to prevent the death of his murder. That way, his father won’t have to go to jail. He discusses this idea with Bruce Wayne aka Batman (Ben Affleck) who warns him that this can be catastrophic. But Barry still goes back in time and alters the events. He then goes forward in time and finds out that his mother is alive. His father, too, is living with them and all is well. Soon, he realizes that things are not as rosy as they seem to be. On top of that, the evil Zod (Michael Shannon) arrives to kill Superman. What happens next forms the rest of the film.