Brennan returns to the world of Faerie to introduce a new character—Mella, the daughter of King Consort Henry and Queen Holly Blue. When Mella accidentally travels to the country of Haleklind, she discovers rebel forces preparing an invasion using a terrifying new magical weapon. Old favorites Brimstone, Pyrgus, and Lord Hairstreak’s head return—but readers will identify immediately with Mella, whose stubborn streak and feisty daring must save the Faerie realm from mass destruction.