Immediately after their miscarriage, the US diplomat Robert Thorn adopts the newborn Damien without the knowledge of his wife. Yet what he doesn’t know is that their new son is the son of the devil.

Bill Meceita, a boy whose family was murdered in front of him by a gang, sets out 15 years later to exact revenge. On his journey, he finds himself continually sparring and occasionally cooperating with Ryan, a gunfighter on his own quest for vengeance, who knows more than he says about Bill's tragedy.

Bandit leader El Diablo who controls the country with his gang plans to achieve gold destined for Mexico but he is not the only one.

A pair of outlaws are on the hunt for some loot they know is missing from a robbery. Outsmarting and killing anyone who tries to foil their plans.

This semi-amusing sex (romance) comedy has four separate stories: "The Telephone Call", written by Rodolfo Sonego, directed by Dino Risi. "A Treatise on Eugenics", written by Tullio Pinelli from a story by Luciano Salce and Steno, directed by Luigi Comencini. "The Soup", written by Rodolfo Sonego and Luigi Magni, directed by Franco Rossi. "Monsignor Cupid", written by Leo Benvenuti and Piero de Bernardi from a story by Boccaccio, directed by Mauro Bolognini.

Bill learns that his father, during the American Civil War, was accused of theft and killed. Convinced of his innocence, Bill discovers the true robbers.

Hernandez, the sheriff of a small Mexican village, joins a group of townsmen with the intention of killing young orphan Manuel and robbing him of his inheritance. Killer Luke, now an alcoholic for having murdered his own son by mistake, who is chosen for the task, instead decides to take the defence of the poor child.

Forced to abandon their land that was sold to the United States, a group of Mexicans turns into bandits. Their leader, Rojas, with the help of Trevor organizes a big robbery. But, caught by the sheriff, he is condemned to 20 years of prison. Threatening to torture Rojas' son, Trevor learns where the money is hidden, not realizing that Rojas' revenge would be so ruthless...