Argumento
Batman Thomas Wayne finds himself back on the Flashpoint Earth, a timeline that he previously helped Barry Allen from Earth-0 eliminate so that Thomas' son Bruce could live. Desperate to restore the timeline to restore Bruce back to life, Thomas reaches out to his world's Barry Allen, who never became the Flash, for help. Meanwhile, Batman Bruce Wayne of Earth-0, with help from Mime and Marionette, searches for secrets in the lair of the Time Masters.