Резня на вечеринке черлидерш

Lori is in her senior year at Carver high and would give anything to be on the cheer team. The girls in the squad are mean to Lori and won't let her join the team. When Ali, who is supposed to host the annual cheerleader sleepover goes missing, Lori steps up and invites the girls to her home for the sleepover. One by one the cheerleaders meet their demise, is Lori responsible or is there someone more sinister slaughtering the cheerleaders?