Tonton Streaming He-Man and the Masters of the Universe (1983) S1E39 - The Starchild

He-Man rescues a small girl from danger in the Evergreen Forest, and it turns out that the girl is a magical Starchild- and two tribes in the forest, the Tree People and the Cave People, are fighting for custody of her. He-Man takes the Starchild back to Palace Eternia with him, so the Royal Family can sort out the custody battle.