In the early 20th century, an aging, legendary gunslinger arrives in Carson City, Nevada, seeking medical advice for worsening pain. Upon his arrival, he learns from the local doctor that he is terminally ill with cancer, with only a short time left to live. Seeking a quiet place to spend his final days, he lodges in a boarding house owned by a widowed woman and her teenage son. As he settles into the household, the gunslinger forms a bond with them despite his rough exterior and the son's fascination with his infamous past.

During his stay, the gunslinger finds himself reflecting on his life, grappling with the choices he's made, and contemplating how he wishes to face the end. However, news of his arrival quickly spreads throughout town, drawing the interest of those who admire or despise him. Among them are local law enforcement, old adversaries, and ambitious young wannabes seeking to make a name for themselves by challenging him. As pressure mounts from relentless would-be challengers, he must navigate the delicate balance of securing peace for those around him while coming to terms with his own mortality. Faced with the looming threats and unresolved business, he remains determined to confront his fate on his own terms, preparing for one last stand that will define his legacy in the unforgiving world of the Wild West.