Still mourning the death of his wife a year earlier, Sheriff Walt Longmire resolves to focus on rebuilding his career and cleaning up his life.

Sheriff Walt Longmire and deputy Vic Moretti face a truck stop prostitution ring, a cattle theft and more.

Separate investigations into the murder of Walt's wife and the shooting of Branch converge on a suspect who was thought to be dead.

Walt sets off in pursuit of his wife's murderer, Branch's fate is revealed, and everyone seeks a second chance.

Walt, Vic, Henry and Cady deal with new dynamics as ramifications from a shooting and the actions of a vigilante complicate life in Absaroka County.

Walt faces legal troubles that jeopardize his career and home as he, Vic and Henry fight to keep the peace.