Sheriff Walt Longmire is back in the saddle and dedicated to serving his community after coming to terms with the devastating loss of his wife. Walt's reign as sheriff hangs in the balance as he fights for re-election against rival, Branch. Vic is visited by the ghost of a past she'd rather forget. Walt's daughter Cady searches for answers about her mother's murder, while Walt's possible connection to the death of his wife's killer threatens to draw...

Eve is on a revenge mission while Villanelle has embraced a brand-new way of life in an attempt to prove she's not a 'monster,' all while Carolyn goes to extraordinary lengths to continue to chase down the Twelve.