When a young treasure hunter tells Rick and Marty he is hunting for the long lost treasure of pirate Jean Lafitte, the brothers are so intrigued they send Matty Blake to assist in a dangerous dive to further the search.

After personally investing in a treasure hunt off the coast of Florida, Marty Lagina and Craig Tester are thrilled when their search uncovers rare and historical artifacts. But the duo must quickly come to terms with the complicated world of treasure ownership.