When Wick, fifteen-year-old Enids 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 shes acting desperate as she spies on Wick, his twin, her twin, and the rest of the boys from twin studies. That doesnt stop her from following them aboard a yacht and hiding in the bathroom. But then the boys take the yacht out into a storma storm which leaves everyone adrift in the ocean without food or waterand Enid discovers a new definition of desperate. With sharks circling and no help in sight, Enid and the twins must find a way to trust each other in order to surviveand face the fact that they might not make it home.