The Heartless Giant originally aired as part of the first episode of The Jim Henson Hour. A young prince is tricked into helping a heartless giant escape from the king's dungeon. The evil giant unleashes terror across the land and those who go off to fight him never return. The young prince becomes the servant of the giant and tries to find where the giant's heart is hidden. Jim Henson cited "The Heartless Giant" as his second favorite of all the shows he'd ever done, just behind Dog City.