A demented nun sliding through morphine addiction into madness, whilst presiding over a regime of lesbianism, torture and death. Sister Gertrude is the head nurse/nun in a general hospital, whose increasingly psychotic behavior endangers the staff and patients around her.

A group of catholic school girls are victimized by a sadistic and jealous nun, “Sister Ursula”. The girls drown the nun in a pool of “holy” water. Eighteen years later circumstances arise in which the nuns spirit is released to take her revenge. She possesses the body of Eva, the daughter of one of her killers. In order for the Sister Ursula to be properly laid to rest Eva herself must be killed.

Chicano gangster Micky Solis finds that his family has been slaughtered by the Chinese mob. His whole life force turns to finding the killers. A slick lawyer (Angus MacFadyen) leads Micky to a “nun” (Paz De La Huerta) who shows him who the killers are that took his family from him. Micky unleashes a war of bullets and emotions on the family until each one dies by the same sword they wielded. The only thought on Micky’s mind is REVENGE: VENGANZA.