Nemesis Games

The fifth installment of The Expanse science fiction series picks up roughly a year after Cibola Burn. Humanity has expanded across the solar system, with Earth, Mars, and the Outer Planets Alliance (OPA), a political body representing the Belt's asteroid and station dwellers, competing for dominance. The recent opening of over a thousand new worlds through alien-built ring gates has destabilized all three powers, as colonists rush to claim new planets while Belters face economic obsolescence.

A prologue set one year earlier reveals Filip Inaros, the teenage son of radical Belter leader Marco Inaros, leading a covert raid on the Martian military shipyard at Callisto, one of Jupiter's moons. Filip's team uses kinetic strikes to destroy orbital defenses, then loots four canisters of stealth coating, a radar-absorbing technology used on Martian warships. Filip abandons two of his own men to ensure the mission's success. The stolen coating's purpose remains unclear.

The main narrative begins with Captain James Holden watching his ship, the Rocinante, undergo extensive repairs at Tycho Station, the OPA's premier construction facility. Fred Johnson, Tycho's director and the most powerful figure in the OPA's moderate wing, outlines his post-gate strategy: by distributing aid through Medina Station, the hub of all the ring gates, the OPA can position itself as a future governing authority. Holden warns that an unknown force annihilated the alien civilization that built the protomolecule, the alien nanotechnology responsible for creating the ring gate network, but Fred dismisses the threat.

During the long repair layover, the crew disperses. Pilot Alex Kamal departs for Mars to reconcile with his ex-wife. Mechanic Amos Burton leaves for Earth after learning that Lydia, the woman who raised him, has died. Executive Officer Naomi Nagata, Holden's partner, receives a secret message from Marco Inaros, her former lover and Filip's father, claiming Filip is in danger. She leaves without explanation, and for the first time, Holden finds himself entirely alone.

On Mars, Alex's ex-wife rebuffs him. He reconnects with Bobbie Draper, a former Martian marine who has been investigating the disappearance of military ships and weapons from Martian Navy records. When armed men attack Bobbie's apartment, the two fight them off and decide to continue the investigation using the Razorback, a small, fast racing ship. On Earth, Amos confirms Lydia died naturally, confronts an old friend to settle her husband's care, and visits Clarissa Mao, the imprisoned daughter of a disgraced industrialist, in an underground facility called the Pit.

On Ceres Station, Naomi reunites with Filip, now sixteen and deeply under Marco's influence. Through flashbacks, her history emerges: as a teenager, Marco tricked her into writing software that sabotaged a ship, killing 234 people. When she tried to leave with their infant son, Marco took Filip as leverage. Now Naomi purchases a small transport called the Chetzemoka for Filip's team, intending to help and then leave. But as she says goodbye, Marco's associates seize her and inject her with a sedative. The kidnapping was always the plan.

On Tycho, Holden partners with journalist Monica Stuart, who has evidence that at least thirteen colony ships vanished after entering ring gates. When Monica is kidnapped from the station, Holden and Fred rescue her from a sealed shipping container and expose Sakai, Tycho's chief engineer, as a radical OPA mole who may have sabotaged the Rocinante.

Everything converges in a single coordinated strike. Three stealth-coated asteroids slam into Earth, killing hundreds of millions. Simultaneously, Marco's Free Navy attacks the Martian prime minister's convoy, launches a coup on Tycho Station, and seizes Ganymede's docks. On the Pella, Marco's flagship, Naomi is forced to watch the devastation. Filip boasts that he retrieved the stealth coating that made it possible. Naomi tells him Marco put blood on his hands to make him complicit, just as Marco once did to her, but Filip rejects her words.

The third asteroid strikes near the Pit, trapping Amos and Clarissa underground. They fight through collapsed passages and past a murderous fellow prisoner, emerging onto a devastated landscape. Over the following weeks, they trek to Baltimore, where Amos persuades his old friend Erich, a crime boss, to flee Earth. Using Clarissa's knowledge of a private spaceport, the group repairs a luxury yacht and escapes to Luna.

On Tycho, Holden and Fred repel the coup with station security forces, but insurgents steal Fred's safe containing the only known protomolecule sample. Aboard the Pella during the Free Navy's attack on the Martian convoy, Naomi breaks free, finds a hidden diagnostic terminal, and broadcasts a warning that the Rocinante's reactor has been sabotaged. Marco retaliates by rigging the Chetzemoka as a bomb, broadcasting a fake distress signal in Naomi's voice to lure rescuers into a proximity-triggered explosion. Unable to disarm the trap, Naomi blows the outer airlock and leaps across fifty meters of hard vacuum without a suit, using only an emergency injection of oxygenated blood to remain conscious. Her old companion Cyn, who tried to block her path, is lost to the void.

Alone on the gutted ship, Naomi works in grueling sorties into the vacuum, managing to alter the false broadcast into a coded message conveying to Holden that she is alive and in control. When her strength fails, she exits the airlock in an unpowered suit, signaling rescuers to stay away.

Alex and Bobbie take the Razorback to the Hungaria asteroids near Mars, where they discover a hidden fleet of stolen Martian corvettes. Fleeing under missile fire to the Martian prime minister's convoy, they intercept Naomi's warning. When the convoy's escort ships turn out to be more stolen vessels, Alex evacuates Prime Minister Nathan Smith in the Razorback. After the Free Navy disengages, Smith orders them to attempt Naomi's rescue. Bobbie, in borrowed power armor, rides a redirected missile to reach Naomi in the void and saves her life. Naomi orders the Chetzemoka destroyed, and the Rocinante, its reactor safely purged, arrives with a temporary crew to collect everyone.

Marco broadcasts a system-wide declaration claiming sovereignty over all space beyond planetary atmospheres and calling on Belters to rise. Fred compares Marco to Alexander the Great, bold but lacking strategic depth, while Holden counters that Belters' grievances are real and the new colonies genuinely threaten their existence. On Luna, Chrisjen Avasarala, now acting UN secretary-general, convenes a conference with Fred, Smith, and Holden's crew to plan a joint response. Naomi requests blanket immunity in exchange for full testimony about Marco's operations, then privately tells Holden everything: her relationship with Marco, Filip, the sabotaged ship, her attempted suicide, and killing Cyn during her escape. Amos reveals he has smuggled Clarissa aboard the Rocinante as a prospective crew member.

Analyzing the data, Naomi discovers that while the Free Navy's fleet traces to Martian military records, not a single vanished colony ship matches any known vessel. Something within the ring gates themselves is destroying ships. An epilogue confirms the threat: Captain Sauveterre of the Martian battleship Barkeith commands a rogue fleet bound for an uninhabited system called Laconia under orders from Admiral Duarte, the Martian officer behind the black-market military sales who traded ships to Marco in exchange for the protomolecule sample. As the Barkeith passes through the ring gate, the crew experiences a terrifying dissolution of perception before dark, alien shapes rush toward them. The unknown force that destroyed the ring builders has struck again.