In the attic the Family discovers Great-Grandfather Pegleg's old sea chest. There's a treasure map in it. Gomez explains that Pegleg was buried at sea with 'full military honors - handcuffed, blindfolded, dropped off a plank'. Morticia wants to search for the treasure, but half the map is missing, so the first search is for the rest of the map. When Gomez finds it they charter a boat from Captain Grimby and his mate, Mr. Brack. Grimby becomes infected with greed, especially when Gomez offers him $200,000 for the charter. The sailors try to steal the map, but Fester walks in on them. They torture him to make him open the safe, but he enjoys that. He only gives them the combination when they stop. The safe is booby-trapped, and they're scared off. Also in the safe is a code book for the map. When they check it, it turns out that the treasure is buried under the house, not at sea. They dig up the treasure chest. They open the chest and find that its filled with chocolate gold pieces.