Tommy Klopt is cunning and clever. Of course, he's a pirate. The twelve-year-old, along with his brothers, Connor and Dillon, begin a life at sea when their distraught father, Hoody, hits hard times. After a couple of years of smooth sailing as Robin Hood-type pirates, the family encounters a typhoon in the form of 400-year-old pirate ghost, François l'Olonnais. To force Tommy to complete a task, l'Olonnais captures Hoody. In a race against time to free him, the boys go up against real pirates and the FBI. But even if they can save their father, will l'Olonnais, the most evil pirate in history, really hold up his end of the bargain?