Sitting beside a smokey fire, Edison and his new friend Jonathan hear a curious tale of pirates and a cabin boy who is swept into an underwater tunnel on Dead Chest Island. Is the tunnel really there and where does it lead? Edison and Jonathan concoct a crazy scheme to borrow a boat and search for the tunnel. Edison's loudmouth sister is a vexing last-minute participant in the quest. They set off on a sunny Caribbean afternoon, planning to return in time for supper. But the motor sputters and dies, triggering an amazing chain of events. Find out how the three adventurers deal with a...