Jason was the rightful heir to the throne of Iolcus, but his uncle Pelias seized power and imprisoned Jason's father. When Jason grew up, Pelias agreed to relinquish the throne if Jason retrieved the Golden Fleece from the faraway land of Colchis. Jason assembled a crew called the Argonauts and sailed on the Argo, facing many dangers along the way. In Colchis, Jason fell in love with Medea who helped him defeat challenges and retrieve the Fleece, but they were forced to flee due to Medea's betrayal of her father the king. Back in Iolcus, Medea tricked Pelias' daughters into killing their father, so Jason and Medea left