At the onset of a zombie apocalypse, chaos descends as Rose loses her family, Ryan tries to get his bearings, and a desperate man finds a new guise.

Wynonna attracts some unwanted attention after returning to Purgatory; at the same time, she struggles to keep her impetuous nature in check while trying to conform to the rules imposed…

Wyatt Earp’s great granddaughter celebrates her 27th birthday by reluctantly returning to her hometown to take on her family’s legendary curse.