Masters of the Universe

In Eternos, the capital city of the planet Eternia, young Prince Adam and his friend Teela are trained in the art of battle by Chief of the Royal Guard Duncan, Teela's father. The city is attacked by forces led by the evil warlock Skeletor, who takes Adam's parents, King Randor and Queen Marlena, prisoner, while Duncan is gravely injured by mercenary Trap Jaw. The Sorceress, guardian of Castle Grayskull on the outskirts of Eternos, helps Adam escape by opening a portal to Earth, Queen Marlena's homeworld. She entrusts Adam with the Sword of Power, reminding him to never let go of it. Adam escapes through the portal, but loses the sword in the process.