Xavier, a pharmacist, lives peacefully in bigamy with his two women, Carmen and Beatriz, but the harmony breaks down when they find he has another lover, Monique, a nightclub dancer.
Those involved in the making of an amateur porn video end up getting slashed to death with a cane sword. It's up to the brave policewoman Eugenia aka The Scorpion (Maribel Guardia) to stop him.
