A police detective in the asteroid belt, the first officer of an interplanetary ice freighter and an earth-bound United Nations executive slowly discover a vast conspiracy that threatens the Earth's rebellious colony on the asteroid belt.
Cast: Thomas Jane, Steven Strait, Cas Anvar, Dominique Tipper, Wes Chatham, Florence Faivre, Shohreh Aghdashloo, Frankie Adams, Shawn Doyle, Nick E. Tarabay, Chad L. Coleman, Andrew Rotilio, Elias Toufexis, Athena Karkanis, Paulo Costanzo, Drew Carrymore
Drummer arrives on Ceres to aid the relief effort. Holden tries to convince Avasarala to release crucial information that might avert catastrophe. Amos and Bobbie get a little R&R. Naomi has a difficult and long-awaited reunion.
A controversial decision puts Holden at odds with his crew. On Ceres, Avasarala struggles to contain an escalating humanitarian crisis. Drummer's growing faction stage a daring raid. Filip makes an unexpected discovery.
Avasarala, with the Combined Fleet of Earth and Mars, takes the war to Marco. Filip and Marco's relationship is tested. The war becomes more perilous and personal for Holden and Naomi when the Rocinante is suddenly forced into a battle.
With an unexpected passenger aboard the Rocinante, Holden and crew undertake a dangerous mission that could shift the balance of power in the war. Drummer decides to make an uneasy alliance. Filip wrestles with his guilt.
The Rocinante crew make a startling discovery on an asteroid. Avasarala and Bobbie contend with the devastation on Earth. Drummer and her family must make a heartbreaking decision. On Ceres, Marco and Filip's struggles turn inward.