Proserpina is the daughter of Ceres, goddess of agriculture. Proserpina and her mother live in Italy during the time when it was controlled by Rome. One day, while she was playing outside, Proserpina falls in love with Pluto, god of death and ruler of the underworld. He takes her to his kingdom and she becomes queen. But after she has been there for a while, she begins to miss her mother and all that she has left behind on Earth. She asks Pluto if they can return to Earth but he refuses because he doesn't want to share her with anyone else.