Masters Of The Universe (1987)

When the evil Skeletor seizes control of Castle Grayskull, He-Man and his allies must travel from their home planet Eternia to Earth in search of the mystical Cosmic Key, the only device capable of stopping Skeletor’s tyranny. As they battle Skeletor’s minions, they form an unlikely alliance with two teenagers who help them recover the key and return to their world for an epic showdown, where He-Man must embrace his destiny and fight for the freedom of his people.