Escape from Galaxy 3 (original title "Giochi erotici nella terza galassia" also known as Starcrash II, Star Lovers, and Space Trap) is an Italian 1981 science fiction film.
While Lithan and Belle Star are treated as honored guests, the village elder hints that they are the only survivors of an ancient ill-fated civilization.
When Oraclon reaches the planet and thinks they've found a radiation signature for the ship, he states Earth destroyed itself in an atomic war long ago.
During the long trek back to their galaxy, Lithan and Belle Star make love, which Oraclon is able to watch from his ship.
He declares he will spare them both, but Belle Star will be his slave forever, and Lithan will spend the rest of his life in forced labor.
They say their final goodbyes, and in a moment of distraction, Lithan vaporizes Oraclon, kills the guards, and frees the kings who were taken prisoner.