Night Train is a late night call-in radio show in New York City hosted by a person called Bat Segundo. The chapter is related entirely in dialogue. Segundo receives regular calls from an entity calling itself "Zookeeper." It becomes clear that Zookeeper is the benevolent artificial intelligence that was created by Mo Muntervary, which has broken loose. It now inhabits satellites, monitoring its "Zoo", being planet Earth. Zookeeper follows certain rules of behaviour; the first rule being that it must be accountable for its actions, which is why it calls the show to reveal its undertakings. Zookeeper develops a popular following, although most believe its calls are the ramblings of a hacker or aspiring scriptwriter. At one point, Bat puts on jazz music played by Satoru on saxophone.