A group of cheerleaders become the targets of an unknown killer at a remote summer camp.

Alison follows her friends to a summer camp for cheerleaders. But she is having bad nightmares. Her boyfriend has followed her to the camp but he seems to be more interested in the other girls, girls who sooner or later are found brutally murdered. Alison starts to believe that she has a split-personality who kills them.—Mattias Thuresson