While on the beach at a seaside resort, Benny finds a bottle with a tattered piece of paper inside. When the Aldens find out that it s part of a map that leads to a pirate s riches, they prepare to search for the buried gold. But the Aldens aren t the only ones looking for the hidden fortune. Will they be the first to solve the mystery of the pirate s map? Aye, mateys, this might be the Boxcar Children s biggest adventure yet."