When Seaweed finds the diary of his great-great-great-aunt Marie, the Magnificent Pirate Inventor, he decides that he must come up with a great invention himself to impress Captain Captain. He comes up with the most useful invention ever, the Fork-o-matic 3000... a fork! However, later in the cove, Sandy and Seaweed present to Captain Captain their brand-new invention, the Slop-A-Jewel 5000!