Hallie, dying to know whether her crush likes her, runs across a mall parking lot with her cell phone blocking her vision as 82-year-old Susan is backing out. The freak accident appears to cost both of them their lives. It's all Susan's fault, right? What business does she have still being behind the wheel at her age? The two find themselves transported to a strange fairground, and argue back and forth over whose fault the accident was. In order to find the truth, the carnival operator makes them an offer: they can have another chance at life, but it will be in each other's bodies. Sent back to very different lives, the two must work together to prove that a defect in the car was behind the deadly crash. Will people listen to a teenager? Or a senior? Until they do, other drivers will die.