The collection begins as Agatha finds a new ally in Krosp the Cat (a geneticexperiment with a smattering of Napoleon's brain cells) and becomes betteracquainted with Gilgamesh, the Baron's son -- who gently breaks the newsthat Agatha has the spark for Mad Science. Othar Tryggvassen escapes the Baron'slab as the Monster Engine is activated by a revenant, and pandemonium ensues onthe city-sized airship as Agatha and Gil battle the awakened behemoth. Adam andLilith arrive in time to make crucial explanations about Agatha's identity andattempt her rescue, but are devastated by the Baron's forces, and Agatha andKrosp must make their dramatic escape alone.