Two screwballs get mixed up with monsters, mad scientists and vampires.

Gordolfo, a self-stylized ladies man, and his doting mother (Naborita) help out a childhood friend claim an inheritance by beating the feared wrestler Tulipan Jones.

Billy Hayes, the marshal, discovers that the bandit whom he has been pursuing so long, and who has for months been torching his county, is none other than an old friend from childhood. Upon being confronted with the truth, the friend draws his gun, and Billy is forced to kill him in justifiable defense. Overwhelmed by guilt, he renounces his office and swears to never use arms again. He rides off toward the town where he and his old friend grew up together. Upon arriving there, he soon becomes involved in a dangerous situation, where Billy must decide whether he will fulfill his promise to keep away from arms, or intervene to save the honor of a woman and the life of an innocent man.

Relatives of a recently deceased man meet at his eerie castle for a reading of the will. They encounter a sinister piano player who turns out to be a toy maker, and his toys are imbued with murderous intentions.

Volcanic activity frees giant scorpions from the earth who wreak havoc in the rural countryside and eventually threaten Mexico City.

An outlaw and a scorned husband both team up to track down and kill the man that wronged them. Along the way, the two men meet a hired gun that loves money just as much as he loves the company of women, so the two men decide to hire him in order to help them on their mission. However, things become complicated when the man they all seek to kill has risen to become a wealthy sheriff with a small army of gunmen at his disposal.

The Jiménez brothers and their allies lead an operation to combat a gang of criminals who have the region under a regime of terror. The bloody confrontations begin to produce the first fatalities.

In a whorehouse in Acapulco, lives Leonor, a young and beautiful woman who is awaiting to reunite with an old lover. Suddenly, the man reappears to take her away from her life of vice. But the debt owed by Leonor to the "Madame" of the house causes a series of conflicts.

A group of effeminate young adventurers rescue a kidnapped teen.