Returning from an adventure in the far future, the Flash and a special guest star, the Atom, discover that the villainous Chronos is tampering with history. But when the two heroes notice that Chronos is trying to undo a terrible tragedy, will they stop him or help him? It’s a special issue about living with the past and living for the future.

How many times does it take for the time-traveling Chronos to save his brother from a fire? What happens when he fractures time from trying him so many times?