Jason was the son of Aeson and the grandson of Critus.Cretius established the city and the kingdom of Aiolkas in the Gulf of Thessaly, and passed the kingdom to his son Aeson.Later, Aeson's younger brother Pelias usurped the throne.After the death of Aeson, his son Jason fled to Chiron, a centaur and half horse.Chiron trains Jason to be a hero.In his old age Pelias was disturbed by an oracle.The oracle warned him to beware of a man who wears only one shoe.He thought over and over again, but couldn't figure out the meaning of these words.When Jason was 20 years old, he set out to return to his hometown, and wanted to recover the right to inherit the throne from Pelias.He carried two spears, one for throwing and one for stabbing.He was wrapped in wild leopard skin, and his long hair hung down his shoulders.On the way, he passed a big river, and an old woman by the river begged him to help her cross the river.In fact, she was Hera, the mother of the gods, and the enemy of King Pelias.Because of her disguise, Jason did not recognize her.He carried the old woman across the river.In the river, one of his shoes got stuck in the mud and could not be pulled out.With one shoe on and one foot bare, he continued on his way and came to the market of Iolkas, where a group of people were busy. It turned out that his uncle Pelias was devoutly offering sacrifices to the sea god there. Poseidon.People were surprised to see Jason handsome, tall and imposing, thinking that it was Apollo or Ares who came to the world.The king, who was arranging the sacrifices, couldn't help being surprised when he saw Jason coming, because the stranger only wore one shoe.Immediately after the holy sacrifice was over, he approached the stranger and asked him who he was and where his home was.Although Pelias pretended to be nonchalant when he asked the question, his heart was full of doubts and fears.

Jason boldly answered that he was the son of Aeson, who had been brought up in the cave of Chiron.Now he is back and wants to see his father's old house.The cunning Pelias listened courteously, and received him kindly, letting no trace of fear or uneasiness escape.He sent someone to take Jason to walk around the palace.Jason looked at his father's old residence with longing eyes, feeling very satisfied in his heart.For five days, he feasted with his cousins ​​and relatives to celebrate their reunion.On the sixth day, they left the tents specially set up for the guests and came before King Pelias.Jason said to his uncle modestly: "King, you know, I am the son of the legal king, and everything you occupy belongs to me. But I still want to leave you the sheep, the cattle and the land, Although you have taken these from my father. I want nothing else but my father's scepter and throne."

Pelias quickly calmed down and said kindly: "I am willing to meet your request. But you must also agree to one of my requests and do one thing for me. I am too old and weak to do this. For a long time I dreamed of the ghost of Phryxus in my nights. He asked me to calm his soul and grant his one wish, to go to Aeetes, king of Colchis, Retrieve his remains and the golden fleece. It is my duty to go, but now I must entrust you with this honorable mission, and you will gain great honor from it. When you bring back this precious spoil, you will be able to Get the scepter and the throne."