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.