In 1872, an embittered gunslinger named John Henry Clayton attempts to make amends with his estranged father Reverend Samuel Clayton while their community is besieged by ruthless land-grabbers.

Nate Burns accepts a job as chief of police in Lunacy, Alaska, hoping to to get away from the traumatic death of his partner back in Baltimore. He meets Meg, an independent bush pilot, whose father is found dead in a mountain cave.