Blondine, the daughter of a poor fisherman, marries the Prince of the Mountain. Brune, her sister, envies Blondine her happiness and tells her that a secret lies hidden in her husband's name. Blondine tries to discover it but, before she does, the Prince is imprisoned by an ogre. Blondine must face goblins, imps, and the water djinni before she can deliver her captive Prince.