Venus Meets the Son of Hercules

Mars descends from Mount Olympus to planet Earth to defend a kingdom besieged by invaders led by an African warlord named Afros. The warlord threatens to destroy the kingdom's capital unless they surrender. Antarus, a corrupt and ambitious courtier conspires to become king. His plans include a deal with Afros and marrying Ecuba, daughter of the king. He is distracted by the beautiful maiden Daphne, whose father the king's emissary was recently killed by Afros during the midst of a parley. Afros is killed in a duel with Mars and his army is scattered during a siege. Antarus continues his plot to become king while maneuvering his pawns in court. Mars rescues Daphne from a couple of Afros' men during her attempt to recover her father's body on the roadside. After falling in love at first sight with Daphne, Mars reluctantly returns to Olympus to reunite with Venus, who he accuses of deceiving him to look like Daphne on earth. Venus releases Ares, explaining her beauty and grace exists in all mortal women including Daphne who she recognizes Mars is profoundly in love with. He returns to earth in time to learn that Daphne has been condemned to be sacrificed to a carnivorous plant monster alongside a deaf-mute slave girl accused of murdering Ecuba (who was killed by Antarus). Mars arrives with heroic timing to save the women from sacrifice but Daphne is fatally shot with an arrow by Antarus who followed after Mars to kill him. The two fight and Antarus is subsequently cornered and devoured by the monstrous plant. Recognizing Mars' eternal love for Daphne, Jupiter answers his son's prayer and spares her life as she appears waiting in a white chariot. Mars joins her and bids farewell to the king and his people who arrived at the sacrificial site in time to see the pair ride off into the heavens presumably to live on Mount Olympus forever.