As Art's frustration with Raylan boils over, the Crowe family battles both the U.S. Marshals and the Crowders to stay in Harlan. Boyd enlists unlikely allies to ensure Ava's safety in prison and regain control of the local drug trade.

A computer hacker leads Raylan on a wild goose chase. Ava looks to secure her safety in prison, while Boyd and Johnny square off over a heroin deal in Mexico.

When Kendal takes off with his uncle Jack, Raylan's search exposes the truth about their relationship to Wendy. Meanwhile, Boyd and the Crowes move heroin across the Mexican border, and Ava sets up a drug smuggling operation in prison.

Raylan and Boyd collide on the hunt for Dewey Crowe, while bad blood simmering in the Crowe family finally boils over.

Following an attack on the Marshal's Service to avenge Danny's death, Boyd lands in the hot seat with Duffy and Picker. As Raylan struggles with being pushed aside at work, a powerful inmate's murder presents both danger and opportunity for Ava.

Raylan puts pressure on every criminal in town as a ploy to arrest Darryl Crowe Jr., while Boyd and Duffy enlist an unlikely ally to fight off cartel killers.