On a rotating orbital station, a transport vehicle jams with two people aboard. Tessa and Mika can reach the cabin, but an old machine and a shifted load block their path. There is a way out. They must change the conditions that make it inaccessible.
Beneath the ice of Tessère, a team observes beings that copy the shapes of its machines. When a pilot becomes trapped in the depths, Sana must understand what attracts these creatures — and what makes them close up.
The tram no longer recognises their address. Yet Salomé and her neighbours still live there. In a city that certifies its public announcements, she discovers how a carefully calculated truth can erase fifty-six people.