On a glorious summer's day in Qualham, Benji, Denny, Quarter, Qui Qui and Millie decide to spend the afternoon on the beach. While playing on board an old run-down pirate ship, the deck of the ship horrifically collapses under Denny's feet, sending him crashing down into an old cabin. When all five explore the old cabin, they discover a treasure map. Is it possible Benji and his friends can follow the trail and discover the treasure?