A young Black Beak sets out on his seafaring adventures as a swab aboard a ship called La Casse Bateau. The ship is manned by a crew of nasty reptiles who treat Black Beak as a slave. After being washed overboard by a storm, Black Beak is rescued by the beautiful mermaid, Coquille. But their adventures do not end there. Coquille is attacked by a giant eel and would have been lost but for the brave efforts of Black Beak.