Metamorphoses Book 7: Medea and Jason
Jason and the Argonauts came to Colchis to claim the Golden Fleece. The king set up two impossible tasks for the Jason to do before he could win the Fleece. Medea, the king's daughter, fell in love with Jason. Betraying her father, she used the magic of Hecate to help the Argonaut perform the feats. When he got the Fleece, Jason left the island and took her with him, as he had promised he would.