This is the fourth volume in the ongoing story of people living on Neptune. The air and sunlight are borrowed, the surface is unstable, and the people are - inventive.Welcome to Neptune Road.At this stage in the story, we have met some of the major players in what looks to be an ongoing struggle for power and resources on this iffy planet. The Bird People are devising rather invasive experiments, one of which seems to have found its way inside of Dr. Mangrove's head. Agent Millman is trying to sort what case he's supposed to work on anyway (Murder? Espionage? Who knows?), and exactly who is hiring him. And Edward, Darby's assistant at his bar, heads to Scar City with some important information for the Agent.