Plot
Wendy Christensen (Mary Elizabeth Winstead), a senior high school student and a photographer visits an amusement park with her boyfriend Jason Wise (Jesse Moss), best friend Carrie Dreyer (Gina Holden) and Carrie's boyfriend Kevin Fischer (Ryan Merriman) on their senior class field trip. As they board the Devil's Flight roller coaster, Wendy has a premonition that it will suffer many malfunctions, resulting in the deaths of everybody on board. When events from her vision begin to repeat themselves in reality, she panics and attempts to stop the coaster from being launched. Wendy and several others leave or are forced off the ride - Kevin, best friends Ashley Freund (Chelan Simmons) and Ashlyn Halperin (Crystal Lowe), athlete Lewis Romero (Texas Battle), goths Ian McKinley (Kris Lemche) and Erin Ulmer (Alexz Johnson), and alumnus Frankie Cheeks (Sam Easton). Moments later, the roller coaster crashes, killing all the remaining riders, including Carrie and Jason, devastating Wendy.
Afterwards, Wendy learns from Kevin about the explosion of Flight 180 and the subsequent events that killed the survivors. Wendy, believing that Kevin is mocking her, dismisses this theory. Later on, Ashley and Ashlyn are killed when their tanning beds malfunction and burn them alive when the salon manager Yuri (Alexander Kalugin) cannot save them because he has been locked out. Realizing Death may be after them, Wendy and Kevin set out to save the remaining survivors, using what they believe to be omens contained in photos that were taken of them prior to the crash. Frankie dies next at a drive-thru when a runaway truck crashes into the back of Kevin's truck, causing the engine fan in Kevin's truck to blow out and slice off the back of Frankie's head. The next day, they try to save Lewis at the gym. However, he doesn't believe them, and then two iron weights from the machine he is using swing down and crush his head.
They find Ian and Erin working at a hardware store. As they explain to them what is going on, Ian speculates that if the last in line were to kill themselves, it would ruin Death's plan and save the remaining survivors. Wendy manages to save Ian as he is about to be crushed by planks of wood, but one of the pieces of falling plywood causes a small bag of sawdust to burst, prompting Erin to stumble backwards onto a nail gun and is shot repeatedly through the head. This leaves Ian devastated, which causes him to resent Wendy.
Wendy learns that her sister Julie (Amanda Crew) was also on the coaster and rushes to the county fair in an attempt to save her. She and Kevin are able to prevent Julie from being impaled on a harrow. Wendy then asks Julie who was sitting next to her on the coaster. Her question is answered when Julie's friend, Perry Malinowski (Maggie Ma) is impaled by a flagpole launched by a rope tied to a horse, as Wendy, Julie and Julie's other friend Amber Regan (Ecstasia Sanders) watch in horror.
Wendy saves Kevin from a fireworks explosion caused by the commotion and is confronted by a deranged Ian, who blames her for Erin's death. Another explosion sets off fireworks which nearly hit Wendy and Ian, but instead strike a nearby cherry picker holding a large sign. As Ian shouts that Death cannot kill him, the sign falls from the cherry picker and crushes him in half. Wendy believes the sign was meant for her, but Ian intervened and inadvertently took her place.
Five months later, Wendy is on a subway train with her roommate Laura (Agam Darshi) and her friend Sean (Dylan Basile) and spots Kevin and Julie. Suddenly Wendy has a premonition that the train will derail, causing their deaths. The three try to stop the train in vain, and the screen cuts to black with the sound of screeching metal being heard. Their fates are left ambiguous.
