Mickey and Goofy are lost at sea, and they get caught in a pitched battle between buccaneer Pete and sneaky submarine commander Captain Grapple. At stake: the ancient gold of Port Rancid, a pirate stronghold that sank beneath the waves -- and is now guarded by a pack of very jealous sea monsters! Then, Mickey and Goofy have their hands full with a host of mystery puzzlers -- from canoe-going ghosts in Legend of Loon Lake to hi-tech arsonists in The Phantom Fires to a piratical parrot in The Castaways of Whale Bay!