A group of teenagers invent a game in which one of them is secretly chosen to be a "killer," while others remain innocent victims. Armed with mock weapons, the "killer" must eliminate the other players before being found out. The teens sneak into a large self-storage warehouse during its closed, late-night hours to hold their game. At first, it's better than ever. But things take a shocking turn as, one by one, the players begin dying...for real. Extras include filmmaker commentary, deleted scenes, outtake reel, trailers, and The Puzzle, the first 500 Pieces film.