Through the wild backdrop of the Lincoln County War, the legendary Billy the Kid becomes ensnared in a deadly game of cat and mouse as lawman Pat Garrett orchestrates the ultimate trap.

Billy and the Regulators are ambushed by Garrett after a betrayal and Jesse deals with a loss, while Catron has a conflict with his daughter as he tries to seize The House from Riley.

After another surprise attack from Garrett, Billy loses a trusted friend, forcing him to seek revenge while Emily makes a calculated decision to reconcile with her father by asking for help.

Garrett and his posse relentlessly pursue Billy and the Regulators and after a tense stand-off, several close allies are forced to choose between loyalty and survival.

As Garrett doggedly searches the New Mexico Territory, savagely interrogating Billy's friends and supporters, their silence gives him the opportunity to stay one step ahead of the determined pursuit, while Emily digs deeper into her father's affairs.

While recuperating, Billy is reunited with his family and he and the Regulators plot a daring prison break to free an old friend while Garrett confirms Emily's suspicions about what really happened to Edgar and her father's involvement.

Living far from his glory days after losing his badge in disgrace, Pat Garrett is forced to face the haunting truth behind his tarnished reputation when Billy and Jesse hunt him down seeking vengeance and their own brand of frontier justice.

Billy returns to New Mexico seeking revenge on Thomas Catron, finding an unlikely conspirator in the Governor's own daughter Emily as he risks everything for justice, bringing the final chapter in this American legend's story to a climactic close.