In 1880, is a hot-headed, notorious gunslinger in New Mexico. His journey through the film follows a path of redemption and eventual tragedy:
: Initially, Billy works for the corrupt cattle baron Dan Hickey , helping him intimidate local farmers. However, after a violent stampede leads to a farmer's death, Billy feels guilty and reconnects with his childhood friend, Jim Sherwood (a character based on Pat Garrett).
: The peace is shattered when Billy’s friend Pedro is killed and Eric Keating is later murdered by Hickey’s men. Driven by a "doomed quest for vengeance," Billy reverts to his outlaw ways to hunt down those responsible.