After performing for a group of children, Superman returns to his Fortress of Solitude to add a new award to his collection. Using his x-ray vision, he spots a woman in danger in the Mediterranean and flies to her rescue. The woman, who claims to be a descendant of the sorceress Circe and from another planet, invites Superman into her ancient home. She offers him a drink and proposes marriage. When Superman politely declines, she reveals she spiked his drink with an evolution potion that will transform him into a beast. Unless he returns to accept her proposal by dawn, he will remain in that monstrous form forever.