Four Dunedin university girlfriends decide to throw a flat party and spend some quality girl time together after completing their hectic end of year exams. The night before they are due to return home for their summer holidays it’s decided to invite Amber their odd ball classmate. However Amber is unknowingly there to play the lead role for their amusement. The party is equipped for scandalous hijinks, drinking games and a strict no boys rule in their old Dunedin flat.
As the girls get into the swing of the things some unexpected secrets are revealed that turn the mood of the gathering into a tense stalemate. Friendships are tested and Amber is forced to choose sides.
As the night darkens the innocent party discovery they are not alone inside the house and that all their exits have been somehow obstructed to stop any escape. With the realisation that their communication has also been cut off the girls start to become hysterical. Amber emerges as an unlikely heroine that offers bravery and hope of escape. However their misfortune of being slowly hunted from within by a hatchet wielding killer has just started.
Will any of them survive? Can the girls avoid a grisly end or will the psychopathic stalker get to satisfy his need for freshly slaughtered student bodies.