Emilio Brentani leads a peaceful and uneventful life with his older sister Amalia. Until he meets Angiolina Zarri, a beautiful but fickle, wayward and coquettish young woman. Unfortunately for him, Emilio falls madly in love with her.

In order to placate the angry gods, who have allowed Thessaly to be overrun with barbarian invaders and beset with natural disasters, King Jason takes his Argonauts on a search for the fabled Golden Fleece. Meanwhile, back at home, his scheming regent is plotting to get his hands on the kingdom--and the queen.