A test of courage... A stormy sea voyage...A really big whale! Someone has just run off with Joe Talbot's basketball-someone wearing a White Whales team emblem. Joe and Wishbone decide they will get it back, no matter what. This incident reminds Wishbone of the great sea adventure Moby Dick. He imagines himself as the sailor Ishmael on board a great whaling ship under the command of peg-legged Captain Ahab. They are on the quest of a lifetime, as they chase a great white whale across the seven seas. When the ship comes face-to-face with this menacing creature, only a hero with a courageous canine heart and four mighty sea legs will be able to keep his head above water. Thar she blows!