Raised by an unstable father who keeps constantly on the move, Sam Border has long been the voice of his silent younger brother, Riddle, but everything changes when Sam meets Emily Bell and, welcomed by her family, the brothers are faced with normalcy for the first time.

Didi's father is constantly pressuring her to do better: win at chess, run faster every day, shoot better, hunt better or go hungry; she is not allowed friends, or time off or any pleasures; he always reminds her that they have to be prepared to fight the rest of the world--but what he never tells her is that when she is the best he plans to hunt her.