Lily Armitage is summoned to her family's grand manor for Christmas by her estranged aunt who wants her to take part in a family tradition to play the Christmas game, promising that whoever wins will secure the deed to the home. As Lily gathers with her cousins to play the game, she realizes that each of them have their own agenda and they're not about to play fair. But Lily isn't interested in the home, she wants to learn who killed her mother there twenty-one years ago. When a snowstorm strands them however, she realizes someone is hiding a secret and the game takes a deadly turn.