Chaco, a Mexican on the run from just about everyone, is framed for the killing of a couple of Mexican cattlemen. Everyone knows he's innocent but the evidence is substantial. Chaco escapes and with the help of a bounty hunter, goes after the real murderers.

Using Leonardo Da Vinci's innovative designs for weapons of war, flying engines and other machinery, three brothers join forces to fight a wicked and powerful Duke in early-Renaissance Italy.

Julius Caesar flees Rome because of a conspiration against him and takes refuge by the king of Bitinia. He finds a woman there and while he escorts her to Rhodes their ship is attacked. Caught by the pirates he asks for help to get back to Rome.

Strongman Maciste must battle the one-eyed Cyclops monster that is ravaging the land of Sadok, while at the same time fending off the advances of the evil Queen Capys, who wants to do a little ravaging of her own.