Two doctors find their graveyard shift inundated with townspeople ravaged by sores. Among the wounded is Cherry Darling, a dancer whose leg was ripped from her body. As the invalids quickly become enraged aggressors, Cherry and her ex-boyfriend El Wray lead a team of accidental warriors into the night.

El Mariachi just wants to play his guitar and carry on the family tradition. Unfortunately, the town he tries to find work in has another visitor, a killer who carries his guns in a guitar case. The drug lord and his henchmen mistake el Mariachi for the killer, Azul, and chase him around town trying to kill him and get his guitar case.