Tired of the sexual escapades on earth by his daughter Venus, Jupiter, the god of Lightning, decides he shall marry her soon to one of the candidates: Maciste, a mortal working in Vulcano's cave, and Mars, the god of War. But Mars abducts Venus, allied with Pluto and Eris, and works out a plan involving a bamboo tower high enough for the soldiers of the Thracian King to attack Jupiter in the high Olympus. The gods' contend will be resolved in human fashion on Earth, where even gods are mortal.