The town's cooky old man has dreams of finding a pirate's treasure and has gone on several trips for it. He goes to Mr. Vega and offers to whip cowardly Diego into shape in exchange for Vega funding his next adventure. He agrees and Diego and Bernard get sent on a treasure hunt. The army and bandits follow the men in hopes to get the treasure themselves. Zorro defeats them and the old man gets his treasure: a real pirate ship.