Medea helped Jason obtain the Golden Fleece by using her magic to overcome traps and kill a giant serpent. They fled to Corinth where Jason abandoned Medea to marry the daughter of Corinth's king. As revenge for his betrayal, Medea murdered their two sons. When the king exiled her, Medea gained one day's reprieve. During an argument with Jason, she decided killing their sons was the surest way to destroy him. Medea then appeared above the palace in a chariot with the corpses, mocking Jason before escaping to Athens with the bodies.