A single Purge Night affects the lives of four interconnected characters over the ensuing year, all inevitably leading up to the next Purge.

Blankman: He has no superpowers, no money and no name. He's Blankman, a self-appointed neighborhood crimestopper who's so broke that he fights crime in his underwear. Mo' money: A lifelong con-man meets a girl and tries to impress her by cleaning up his act and doing things the honest way. Little man: When a stolen diamond is stashed in the home of a wannabe father and his workaholic wife, a pint-sized jewel thief poses as the world's ugliest baby...