In the outer solar system near Saturn, James Holden and the crew of the ice-freighter Canterbury, investigate a distress call from a mysterious derelict ship, the Scopuli. On Ceres Station, Detective Miller begins an off the book investigation of a missing heiress, Julie Mao.

Holden and crew are trapped in badly damaged shuttle. On Ceres, Miller uncovers clues about Julie Mao. On Earth, Chrisjen Avasarala questions a terrorist.

Holden and the crew are taken prisoner by the Martian Congressional Republic Navy. Miller deals with unhappy rioters. Avasarala plays politics and gets severely burned.

Holden and crew find themselves in the middle of a desperate battle while still aboard the Martian battleship. Miller’s partner, Havelock, goes missing.

Holden finds an unlikely ally. Miller’s obsession with Mao intensifies.

Miller gains valuable information from a hidden data cube. Holden and his crew learn their host’s agenda.

Holden and his crew face a Martian military blockade. Miller finds a new reason to forge ahead. Avasarala visits Holden’s family.

A derelict vessel holds a potentially devastating secret. Holden and his crew cross paths with Miller on Eros. Avasarala receives bad news.

Julie's origin story ends up revealing her trajectory. Holden and Miller work together as they take a look at a strange emergency happening on Eros.

Avasarala uncovers a game-changing secret while the future of the human race might be in Holden and Miller's hands.

Unlikely allies Joe Miller and the crew of the Rocinante led by Jim Holden uncover more about the conspiracy to release the protomolecule on Eros station.

With the help of Fred Johnson and the OPA, Miller, Holden and the crew stage a raid for information on the protomolecule. On Earth, Avasarala learns a truth about Fred Johnson.

Holden and Miller butt heads about how the raid was handled.

Miller devises a dangerous plan to eradicate what's left of the protomolecule on Eros.

The Rocinante chases an asteroid as it hurtles towards Earth.

The Rocinante crew deals with the fallout over Naomi's betrayal while caught in the middle of the war between Earth and Mars while Avasarala and Bobbie hatch an escape plan.

The Rocinante answers an unexpected distress signal. Bobbie and Avasarala find themselves being hunted by a mysterious captor. UN Secretary-General Sorrento-Gillis brings in a colleague from his past to lend an ear during this crucial time of war.

As Earth strategizes a costly ploy to gain advantage in the war against Mars, Anna struggles to convince Sorrento-Gillis to do the right thing. Avasarala and Bobbie seek refuge aboard the Rocinante.

The Rocinante tends to wounded Martian soldiers in exchange for supplies. Avasarala struggles with how to disseminate a key piece of evidence despite being in hiding.

The search for Prax's daughter comes to a head. Admiral Souther's men plan for mutiny aboard the Agatha King

The final battle between Earth and Mars threatens the very future of humanity. A new monster is unleashed on Prospero Station. Anna receives the smoking gun she needs.

All eyes turn to the edge of the solar system as a mysterious new presence emerges; Naomi recommits to her roots; Drummer butts heads with a seasoned new commander aboard the Behemoth; and a young Belter makes a name for himself.

An old friend taunts Holden with the answers he seeks. Naomi struggles to fit in. A mysterious low-level tech aboard the Thomas Prince enacts a terrifying plan.

The Rocinante seeks a new gameplan as they attempt to avoid capture. Melba's true motives are revealed. Naomi is torn between identity and ideal. Anna seeks a way to stay aboard the Thomas Prince.

Holden sees past, present, and future. A ghost from Melba's past threatens her mission. Bobbie struggles to trust an old friend as she leads a group into unchartered territory.

Drummer and Ashford find themselves trapped with few options for survival; Anna tends to the wounded masses as Melba continues to hunt down her prey; the Rocinante crew struggles to survive as Naomi reunites with her true family.

As survivors arrive to the Behemoth, two factions form over how to handle a life-or-death threat. Holden grapples with what he's seen and the choices he must make.

Holden and his allies must stop Ashford and his team from destroying the Ring, and perhaps all of humanity.