When childcare worker Shane Dunphy meets Jason in 1991, he is a tiny, frightened five-year-old who has stopped speaking and terrorizes even the older children in the care home with his angry, violent behaviour. Eleven years later, Shane is shocked to find Jason's file on his desk again. Jason has committed some horrendous crimes and is facing a life of incarceration. Can Shane rebuild what had been a delicate friendship, and help Jason to face up to who he is, where he has come from, and what he has done?