Former party boy Edgar is finally ready to settle down. He's got a thriving T-shirt design business and is about to get married, but on his wedding day, his best friend tempts him into a day-long binge in Los Angeles.

Ten years after he brutally murdered two girls, a killer escapes from a mental institution and returns to his turf, the theme park attraction called Dark Ride. About to crash his path are a group of college kids on a road trip who stumble across the park.