While swimming in a treacherous storm, Gilly, a seal who can shed her skin to become a beautiful woman, finds the lifeless body of David Fraser. Intrigued by this incredibly attractive man, she brings him to land and revives him with her passionate kisses and warm embrace. Soon they are spending their days blissfully in each others' arms. But as a creature of the sea, Gilly cannot give herself to any man -- unless David can find a way to keep her with him forever.