After an adventurous journey they arrived at Colchis. King Aetes asked them what they wanted and he was very angry because he did not want Jason to take the golden fleece away. He set Jason another challenge that he thought he could not do. He told him to yoke the fire breathing bulls and sow the sacred field of Ares with dragon's teeth then kill the guardian serpent. Jason accepted King Aetes' challenge. The King thought that he had sent the young Jason to his death but he had not realised that his daughter Medea had fallen in love with him. Medea had given him special oil to rub on his body which would protect him from the fire breathing bulls. She warned him that when he had planted the dragon's teeth he must throw a stone into the middle of the field.
The next morning the people from Colchis and the Greeks met to watch. Jason walked towards the bulls. They were convinced that he would die. As the flames licked around his body his soothing words calmed the bulls. They let Jason yoke them and plough the field.
Next Jason took his bag of dragon's teeth and started to sow them. As he sowed the lines a crop started to grow, it was not a green crop but an army, armed and ready to fight that was growing. They started to be threatening and Jason started to get frightened. Suddenly he remembered the stone. He picked up a big pebble and threw it to the middle of the field. It hit a soldier who thought that it was another soldier so threw a stone at him. Presently there was a full scale battle in the field and Jason was left unharmed when they had killed each other.
King Aetes pretended to be pleased with Jason and told him that he could have the fleece the next day. In the night Medea told Jason that it was another trick. Jason told his men to get ready to sail, he and Medea went to get the fleece. They got to the tree and the dragon watched them warily. Medea used some of her magic, sprinkled some herbs and said a spell and the dragon went to sleep.
