At 17, Samuel has known only abuse at home and a lack of purpose in the world. When a pretty classmate asks him to kill her groping uncle in exchange for an hour of her affection, he accepts. Clumsy but successful, Samuel emerges feeling empowered. Leaving Tucson for south Phoenix, he develops himself into muscle for hire, dealing out beatings with regularity. He is introduced to Nate, an older businessman who develops and employs professional hit men.