While on vacation in Maine, Joey, Tank, and Gill explore an eighteenth century shipwreck that is uncovered by a storm and soon find themselves part of its ghostly crew.
Joey and Gil's fishing trip takes a dangerous turn when a sudden storm capsizes their boat and they are forced to wait for help in an abandoned lighthouse that is rumored to be haunted.
After spotting a mysterious ship while night fishing near Lynn, Massachusetts, Joey and Tank follow ghostly pirates into a cave that Joey's uncle tells them is rumored to hold a long-lost treasure.
While searching for Blackbeard's treasure on Star Island, New Hampshire, Joey and Tank encounter the ghost of a pirate who protects the treasure and other less dangerous spirits.
