The crew of the Canterbury discover a derelict vessel which holds a secret that may be devastating to human existence.
Thomas Jane / Steven Strait / Cas Anvar / Dominique Tipper / Wes Chatham / Shohreh Aghdashloo / Athena Karkanis / Drew Carrymore / Chad L. Coleman / Elias Toufexis
Naomi makes a desperate attempt to save her son from Marco. On the Roci, Holden battles for the last sample of protomolecule.
Amos and Clarissa are trapped in a collapsed building. Naomi contends with her old family. Holden assembles a new crew on the Roci. Alex and Bobbie make a dangerous discovery in the Belt.
Marco's grand plan shocks Earth, Mars and the Belt.
Ashford closes in on an enemy while uncovering a dangerous plot. Avasarala faces a crossroads in her personal and political life. The Roci crew works to reestablish life on Ilus in the wake of a deadly catastrophe.
Holden and Miller race to save Ilus. Murtry puts his endgame into motion, putting the Roci crew's lives at risk.
Avasarala faces fallout for the UN's military mission. Ashford and Drummer makes big decisions about their future within the OPA. A spreading illness on Ilus takes a toll on Amos. Alex and Naomi's attempt to rescue the Barb turns desperate.
Naomi and Alex work to keep the Barbapiccola in orbit amidst a power outage. Avasarala faces a tough decision. Holden and Elvi race to find a cure for a disease spreading on Ilus.
The Roci crew prepares for an incoming disaster on Ilus. Ashford and Drummer close in on an enemy within the Belt. Bobbie takes on a dangerous job.
As tensions on Ilus reach a boiling point, Holden reveals a secret. Avasarala debates Nancy Gao while an emergency on the Roci forces Alex and Naomi into action.
Drummer and Ashford confront a dangerous person from Naomi's past. Murtry hunts down a target. Bobbie's makes a life-changing confession.
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.
Avasarala is blindsided while on a visit to Mars. The Roci crew continue their protomolecule investigation while tensions between the RCE and Belters reach a tipping point. Drummer and Ashford track down a terrorist.
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 an
Holden and his allies must stop Ashford and his team from destroying the Ring, and perhaps all of humanity.
The asteroid Eros takes direct collision course towards Earth. The Rocinante chases it. As last defense Earth launches missiles against Eros. Miller went inside Eros and make surprising discovery.
Unlikely allies Joe Miller and the crew of the Rocinate led by Jim Holden uncover more about the conspiracy to release the protomolecule on Eros station.