"The treasure is still out there… A treasure the ghosts of the Dragonfly will only share with those who are worthy." Facts are the closest things Sam has to a friend, but they're useless when it comes to explaining the vines twisting around an abandoned house, or the ghost who asks for his help. There's a connection between the house and the Dragonfly, a ship that sank nearly 200 years ago and has yet to be found. More ghosts speak to Sam and he begins to wonder if they've chosen him to find the ship—and her treasure. He needs help, but are the kids from the campground really his friends? Will they help him when an unnatural storm threatens to take them to a place they never imagined? Or will Sam be on his own to solve the mystery before they run out of time?