Wendy (Mary Elizabeth Winstead) is a high school student. One day while hanging out with her friends at an amusement park they decide to take a ride on the roller coaster. Wendy, however, has a presentiment that something horrible will happen. She is able to see that roller coster is crashing and most of the passengers are dying due to it. She finds a way to save herself shortly before the ride...

Wendy (Mary Elizabeth Winstead) is a high school student. One day while hanging out with her friends at an amusement park they decide to take a ride on the roller coaster. Wendy, however, has a presentiment that something horrible will happen. She is able to see that roller coster is crashing and most of the passengers are dying due to it. She finds a way to save herself shortly before the ride goes off the rails. Things happen as seen by her. Most of the people die including her boyfriend, Jason (Jesse Moss), and best friend, Carrie (Gina Holden). After that incident Wendy soon discovers that an evil spirit is following her and her classmates as they begin dying in strange and horrible ways.