Wynonna Earp follows Wyatt Earp's great granddaughter as she battles demons and other creatures. With her unique abilities, and a posse of dysfunctional allies, she's the only thing that can bring the paranormal to justice.
Wynonna has been away from her hometown, Purgatory, for years but returns to reluctantly take on the role that Wyatt Earp's heir is destined for - demon protector. Her task is to take out Revenants, 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.