Crockor is busy storing power in his laboratory so he can create his Sand Creatures. He wants to make enough of them that he will be able to control the entire ocean. Crockor picks Moby and the boys up on his radar and wants to capture them so they don't ruin his plans. Moby and the boys must do battle with Crockor and his Sand Creatures or the ocean may forever be in the hands of the evil Crockor.