Encore enfant, Conan assiste impuissant au massacre de ses parents par le cruel Thulsa Doom, et est réduit en esclavage. Enchaîné à la roue de douleur, il y acquiert une musculature peu commune qui lui permet, adulte, de gagner sa liberté comme lutteur. Désireux d’assouvir sa soif de vengeance, il part accompagné de deux voleurs, Subotai et Valeria, à la recherche de Thulsa Doom…

A gigantic serpent is captured on a remote island and shipped to an American college for experimentation.

A demented archaeologist discovers a living, breathing serpent creature known to the Aztecs as Quetzalcoatl and accidentally kills his wife by giving her one of the beast's feathers, causing the creature to track her down and slaughter her. Using this knowledge he exacts revenge upon his enemies by placing one of the feathers on his intended victim and letting the beast loose to wreak havoc.

Two brothers rob a bank and take a young girl hostage. They find out that the girl is a nudist, so they force her to take them to a nudist colony so they can hide out.

Based on a Lithuanian folk tale.