The heir of Wyatt Earp keeps his legacy living on, by killing demons. Wynonna is Wyatt’s great granddaughter, and she battles demons and other supernatural beings.
I know it sounds like Buffy or something silly, but this is actually a great show. It’s based on the graphic novel, which is always chancy, and in this version, Wynonna’s been away from the town of Purgatory (insert your own ‘Hellmouth’ joke here) for years. She returns on her twenty-seventh birthday and is endowed with one cool trick: she can kill Revenants.
The Revenants are the resurrected souls of the criminals who were taken down at one time by her great-grandfather. Wynonna teams up with sister Waverly, agent Xavier Dolls and Doc Holliday, the cursed-with-immortality best friend of Wyatt Earp, as they work to stop the Revenants from taking over Purgatory and escaping into the world.