Nothing has been the same for Koby since she lost her foot in an accident four years ago. Between the smothering concern of her parents and the awkward glances from the kids at school, Koby can truly feel at home only when she is on the ocean in her dinghy, Titmouse. But tonight, when twelve-year-old Koby finds herself stranded in the middle of the dark ocean with two dying pilot whales and an aching "phantom" foot, she can do little more than tremble. The lives of the two whales are literally in Koby's hands and her strength is weakening. There are no rescuers in sight. The ocean is the last place Koby wants to be.