As the Avengers and their allies have continued to protect the world from threats too large for any one hero to handle, a new danger has emerged from the cosmic shadows: Thanos. A despot of intergalactic infamy, his goal is to collect all six Infinity Stones, artifacts of unimaginable power, and use them to inflict his twisted will on all of reality. Everything the Avengers have fought for has led up to this moment - the fate of Earth and existence itself has never been more uncertain.
Max's and Annie's weekly couples game night gets kicked up a notch when Max's brother, Brooks, arranges a murder mystery party. So when Brooks gets kidnapped, it's all part of the game… right? But 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. With no rules, no points, and no idea who all the players are, this could turn out to be the most fun they've ever had… or game over.