After an accident, forty-year-old Ben Arnold regains consciousness in the kitchen of the house he grew up in. Only he feels different, lighter somehow. Something is horribly wrong. Ben is swept into the arms of his mother, who he hasn't seen in twenty years. She calls him by his childhood nickname, Binky. He sees a younger, unbroken version of his father. His estranged brother is there, reverted back to his awkward teenage self. Finally, adding horror to his confusion, he glimpses his older sister Sara as she runs out the door to meet her boyfriend. Sara, whose absence he has felt every day since her death. Ben is a mere hitchhiker, a parasite in the brain of seven-year-old Binky, and his younger self is not happy to have him there. It is three days before his sister will be attacked. Ben knows he has to save Sara but first he must gain Binky's trust. Even if he can get Binky to say the right words, to do the right thing, who will believe that a young boy can foretell the future?