The movie Boy A tells the story of Eric. He was released from a secure facility and is going by the name of Jack. What happened in his past is told in this movie through a series of flashbacks. Eric became friends with Phillip, who saved him from bullies. A girl sees Phillip vandalizing a public area, and he approached her and stabs her. Phillip drags her under the bridge and Eric follows him.
During Phillip's trial Eric is referred to as Boy A. Phillip is found dead. It is ruled a suicide but many believe other youths killed him. Eric serves his own sentence and is released. He has to work with Terry who is a rehabilitation worker. Eric wants to do well. He gets a job, falls in love, and saves the life of a little girl. Eric wants to tell his love about his past but Terry tells him it is too dangerous.