With 1300 new worlds within reach, a new interplanetary "land rush" has begun. The UN charges the crew of the Rocinante to settle a land dispute on its new colony world "New Terra." Meanwhile, the OPA begins transitioning the Behemoth to become outpost and gatekeeper to humanity's new frontier.

New alien threats emerge on Ilus as Naomi battles health challenges on the planet. Bobbie searches for a missing person on Mars. Avasarala faces a new challenge in the UN.