Max and Annie's weekly couples game night is kicked up a notch when Max's charismatic brother, Brooks, arranges a murder mystery party, complete with fake thugs and faux federal agents. As the six uber-competitive gamers set out to solve the case and win, they begin to discover that neither this game nor Brooks are what they seem to be. Over the course of one chaotic night, the friends find themselves increasingly in over their heads as each twist leads to another unexpected turn.