Napster Varley arrives in Airhaven, which is floating above the "Traktionstadtgesellschaft", and unsuccessfully attempts to sell Zero to Wolf's father Kriegsmarschall von Kobold. Hester, Theo and Shrike arrive at the floating city and attempt to buy her from Varley, who asks for an extortionate price which they cannot pay. Hester and Theo discover Pennyroyal hiding in Airhaven in disgrace and debt after a newspaper exposed him as a fraud. Hester takes what remains of his money and heads to Varley's ship to buy Zero, with Theo accidentally mentioning to Pennyroyal about Zero being alive. With this knowledge and seeking to reclaim fame, Pennyroyal rounds up men from Manchester and marches to Varley's ship. Discovering a photograph of Zero that Varley placed on him, von Kobold attempts to rescue her to make further peace with Naga.