Cordelia Hatmaker has finally united the Maker families and restored the kingdom's trust in Maker magic. But mysterious, chaotic magical outbreaks are beginning to happen across London. And then the unthinkable happens . . . Cordelia is accused of treason. As the guards close in, she must flee London at once. With her father, Prospero, and friends, Sam and Goose, Cordelia sets sail on her family's ship, Little Bear, for the adventure of a lifetime. They're determined to solve the mystery of a missing girl, and to clear Cordelia's name once and for all. But soon they are in the dangerous territory of a band of legendary pirates: the Troublemakers. Is Cordelia a match for the fierce and unstoppable pirate queen?