A group of friends enjoying a weekend in the woods play a game of "Dead Mary" and summon an evil witch who begins possessing them one by one.

Kim and her boyfriend Matt have just broken up, but they travel together to a cottage nearby a lake to spend the weekend with their friends Eve, Dash and his wife Amber and Baker and his new girlfriend Lily. The atmosphere becomes heavy with the situation between Kim and Matt, and one of them suggests them to play "Dead Mary". Matt, Eve and Dash summon the evil witch repeating her name three times in front of a mirror with a candle. Along the night, Matt hears weird noises, is killed and returns to life, while part of the group is possessed by the fiend. Without knowing who is possessed, the rest of the group fights to survive.—Claudio Carvalho, Rio de Janeiro, Brazil

For Kim it was supposed to be the perfect reunion and weekend getaway. She and her best friends drive to a remote lakeside cabin to reminisce about their college days. When the group decides to play the ghoulish game "Dead Mary" they mistakenly unleash a vengeful spirit that possesses them one by one. As the demon forces them to turn on one another, each is faced with a choice. Would you hack your best friend to pieces to ensure your own survival? Well... would you?—Bill Cunningham