After the death of Emperor Constantine in Rome, the persecutions of the Christians threaten the centurion Marco forced to become a gladiator.

James Daly is an American special soldier who goes behind enemy territory during WWII. His Objective: to steal top secret SS document that can change the course of the war.

Just out of prison, ex-con Ugo Piazza meets his former employer, a psychopathic gangster Rocco who enjoys sick violence and torture. Both the gangsters and the police believe Ugo has hidden $300,000 that should have gone to an American drug syndicate boss.

Arms trafficking with the Indians on the one hand and acquiring documents concerning the ownership of a goldmine on the other are the principal interests of Quin and Gomez, the highly suspicious guests at Papa Martinez' inn. The unexpected arrival of the sheriff Thomas, and the journalist, George, upsets the plans of the two unsavoury allies and they have to try every kind of trick to win out against such adversaries.

Rome, under Commodus: intrigue, fight for power, gladiators, senators, Christians, Barbarians, slaves, Pretorians, battles, wrestles, swords and muscles in by-the-numbers Italian epic.

Wedding guests awaiting the arrival of the bride suddenly become nervous when they notice that the table has been laid for 13... an ominous number. Their worries are confirmed when the bridal carriage pulls up outside bearing the lifeless bride and the corpses of three other guests. The suspicions rise between the thirteen guests, and the identity of the murderer is a shocking surprise.

The Sicilian Franco is a sort of imitation of Bruce Lee that Don Vito, a Chinese expelled from his country because he smuggled rice from Palermo to Beijing, tries to train in the art of kung-fu with disastrous results.

In Augusta the emperor Caligula has a serious problem: he must demonstrate his manliness "coram populo" on the occasion of the feast of Priapus. But the Imperial young man is powerless and threatens a fool in front of the people who arrive in droves to watch the battle. To avoid this conflict, he goes to the professor Barnardus and attempts to hide out in his clinic.

Antonio, an Italian immigrant in New York finds himself drawn into the Mob when his options are limited and his desire to make a new life for himself becomes increasingly difficult.