War rages as Marco Inaros and his Free Navy continue to launch devastating attacks on Earth and Mars, and tensions threaten to tear the Rocinate crew apart – while on a distant planet beyond the Rings, a new power begins to rise.

The crew of the Rocinate and their allies confront the sins of their past, while Marco Inaros unleashes an attack that could alter the future of Earth, Mars, the Belt, and the worlds beyond the Ring.

After the discovery of numerous planets beyond the Ring Gate, the Rocinate joins humanity in a new rush for land and natural resources – creating new tensions between Earth, Mars and the Belt.

Earth, Mars and the Belt are at war, with each competing entity vying for control. Now more than ever the Rocinate's mission to unlock the secret of the protomolecule reaches an all-time high -- and every decision made could jeopardize the survival of the solar system.

In the aftermath of the Eros massacre Holden, Miller, and the crew of the Rocinate find themselves in the midst of an impending war between Earth, Mars, and the Belt.

Two hundred years in the future a detective and a rogue captain join forces to investigate a missing persons case that will lead them deep into a conspiracy that spans the solar system.

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