Susan switches identities with her new friend Nicole, so that Nicole can pay for her medical bills with Susan's insurance. Then Susan finds herself trapped in her new identity when Nicole ends up dead under questionable circumstances.
Hallie Parker and Annie James are identical twins separated at a young age because of their parents' divorce. Unknowingly to their parents, the girls are sent to the same summer camp where they meet, discover the truth about themselves, and then plot with each other to switch places.