As fans of the Vampirates series know, nothing is quite as it seems when Vampirates and pirates are involved, so twins Connor and Grace have to keep up their guards. But with every new challenge pulling them farther apart, it seems that the time has finally come for the twins to explore their separate fates. Grace, unable to forget the blindness she caused her Vampirate friend Lorcan, chooses to journey with him to see if his sight can be restored....

While Connor and the Pirate Federation attempt to stop a new ship of vampirates, his twin sister Grace and their long-lost mother Sally reunite, and Sally reveals some news that is devastating for the twins.

Evil Sidorio continues to expand his empire across the oceans, but as he faces growing opposition from both the Pirate Federation and the vampirate realm, twins Grace and Connor Tempest are caught in the conflict.