Tales of lost treasure have long fueled myths and stories, with the most legendary of these treasures once belonging to the Knights Templar. Today, celebrated underwater explorer Barry Clifford and historian Scott Wolter are on a quest to uncover new clues that might connect two of history’s most famous groups, separated by half a millennium: the medieval Knights Templar and the pirates of the 17th century. Their journey takes them from the ancient fortified cities of Europe to the sacred lands of the Middle East, and from a hidden pirate island in the Indian Ocean to the early major cities of America. The discoveries they make could potentially rewrite history and lead them to a treasure that has remained hidden for hundreds of years.