When Wick, fifteen-year-old Enid's boyfriend, suddenly announces that he wants "to take a break," her carefully constructed life in Vermont begins to crumble. As Wick abandons Enid for a trip to Ocean City with their friends from twin studies, she lets her wildest fears take over. Five hundred and forty miles later, Enid realizes she's acting desperate as she spies on Wick, his twin, her twin, and the rest of the boys from twin studies.