Grizzly Lake is a remote and quiet town, but the appearance of a perverted killer breaks the peace here. Lenny (Shanley Caswell) is a vegetarian student with a mediocre appearance and a conservative style. She has a twisted personality and has become an object of rejection in school. Lenny's friend Ian (Spencer Locke) is a popular cheerleader in school. Unfortunately, because she also likes the boy Clapton (Josh Hutcherson), their friendship soon ends. The death of a girl caused eight people, including Ian and Clapton, to be sentenced to probation. Unless they find the murderer, they cannot step out of the school. However, according to the review of a mysterious student, the students who were on probation in the past were killed by the perverted killer. At the same time, they found that the world would be destroyed in ten minutes. In order to save her life, Lenny drove a time machine and traveled to the source of everything in 1992. There, can she become a hero who saves the world?