New Mexico Territory, 1880. Rio Cutler and his older sister Sara must abandon their home after an unfortunate event happens. In their desperate flee to Santa Fe, they cross paths with the infamous outlaw Billy the Kid and his gang, who are ruthlessly pursued by a posse led by Sheriff Pat Garret.

Encouraged by her lover, Danielle kills her husband and goes on the lam with her infant daughter Cali. But the cops catch her and, en route to prison, she agrees to give custody of Cali to her arch rival, her sister Nikki. But on release from prison, Danielle will stop at nothing to get Cali back from Nikki's safe and healthy home.

A Wyoming sheriff rebuilds his life and career following the death of his wife. Based on the “Walt Longmire” series of mystery novels written by best-selling author Craig Johnson.