In his hidden laboratory deep in Russia, Dr. Karl Zimmer has invented the Mandroid, a humanoid robot which follows the motions of a man in a special control suit. He has offered the invention to the USA, who have sent Smith and Wait from the CIA for inspection. However Zimmer's partner Drago has different plans, wants to sell Mandroid to the military. The night he tries to steal Mandroid, he becomes exposed to the highly toxic Superconn. But he can flee and won't give up on Mandroid, even though he's terribly disfigured.

The great King of Dacia, Decebal (Decebalus), is disposed to make the ultimate sacrifice in order to keep the integrity of his people. His own son, Cotyso, is given to the god Zamolxis to the dismay of the King and his daughter Meda. Septimius Severus, a young Roman devoted to his adopted country, must make the choice between his blood origins and the culture he was introduced to.