A child goes missing on Ganymede, the solar system's most important agricultural station, during a firefight between Earth and Mars that nobody officially started. Holden and the Rocinante are drawn into the search while Martian marine Bobbie Draper tries to report what she actually saw, and UN politician Avasarala manoeuvres between the great powers trying to prevent a war that several parties are actively trying to start. Introduces the series' strongest supporting cast and significantly expands its political scope.