Merman accidentally finds and touches a cursed object that belongs to the sea witch. Desperate for a cure, he seeks out the villainesses and discovers that in order for him to lift the curse, he has to sleep and get pregnant with her babies. The curse slowly transforms his tail into delicate, hypersensitive tentacles, and the witch demands he use them to pleasure her before she'll even consider the remedy. He discovers the tentacles have taste buds, and she feeds him her own slick, claiming it's part of the cure.