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The tensions of war threaten to pull the Rocinante crew apart when they make a startling discovery on an asteroid.

With an unexpected passenger aboard the Rocinante, Holden and crew undertake a dangerous mission that could shift the balance of power in the war.

Avasarala, with the Combined Fleet of Earth and Mars, takes the war to Marco.

Holden finds himself at odds with his crew when a controversial decision is uncovered.

Paths converge on Ceres when Drummer and her fleet arrive to aid the relief effort.

In the thrilling season finale, Inners and Belters fight side by side with the crew of the Rocinante in a last, massive, desperate battle with Marco and his Free Navy.