What do Jack the Ripper, Hannibal Lecter and Charles Manson have in common? They have all passed into the annals of history as serial killers, cruel and ruthless characters who made torture and suffering their raison d’être. But they had not counted on the appearance of a new serial killer who would eclipse their work forever — a ruthless murderer who has refined the art of death to chilling extremes; a character who kills his victims using the ultimate weapon: the mega-orgasm.

A number of young prostitutes are found dead with a mysterious smile on their faces, and the decision of the coroner is quite clear: the cause of death is a mega-orgasm. Commander Martínez (Jesús Ochoa) takes charge of the investigation and, as a thorough and meticulous professional, he must learn all about the anthropological secrets of the orgasm and combine these with the most advanced techniques of forensic medicine and his own sexuality.

After painstaking investigations (during which the murder weapon never appears), in which he has to deal with bureaucratic conflicts, false clues and dead ends, Martínez manages to find the murderer. From this moment on, his private life and his professional view of things take a radical turn: the commander perfects the formula of pleasure and invites us to enjoy this entertaining comedy that will arouse the curiosity and the desire of those who dare…