Tommy Klopt and his family are starting fresh on the straight and narrow. With their new crew member, Cosette, who they saved from a sea witch, the Klopts are building a life in New England. The ever-present ghost pirate, Francois l'Olonnais, has grown quite a reputation in the ghostly realm since meeting the family. He's garnered respect for acquiring a new crew of mortals, the Klopt family, at his beck and call. Jealousy and greed have not escaped those serving their time in limbo, and unlike l'Olonnais, these pirates seek to control the Klopts to satisfy their desire for power and treasure. The crew of the Whispering Sands has a plan to release l'Olonnais' hold on the Klopts and mark the family for themselves.