In the ancient Greece, due to misunderstanding God's prophecy, Pelias usurps the throne of Thessaly and kills King Aristo and most of his family. King Aristo's son Jason survives and is brought away by one of Aristo's soldiers. When Jason grows up, he meets Pelias and doesn't recognize him and follow his advice to travel to Colchis to find the Golden Fleece. With a sailing crew of the finest men and under the protection of Hera, queen of the gods, Jason embarks on a dangerous voyage where he battles against harpies, a giant bronze Talos, a hydra, and an animated skeleton army.