Season 5

Complete listed story — includes the ending

S5E1 · Exodus

A team of Belters, sent by Marco Inaros and led by his and Naomi's son Filip, attacks a science vessel near Venus, killing all aboard. Holden and Naomi are stationed at Tycho while Rocinante is undergoing long-overdue repairs. Holden is contacted by Monica Stuart about protomolecule research she has heard about and confronts Fred Johnson about that. Naomi gets word that Filip is on the asteroid Pallas and makes plans to go there alone. Amos is going to Baltimore, Earth, to settle affairs of an old friend and is met by Avasarala during his stop at Luna. On Mars, Bobbie is working for Avasarala to investigate the ongoing Martian weapons trafficking but feels that she is running out of time. Alex arrives to Mars to try and make amends with his family but gets a cold welcome; Bobbie meets him at the bar afterwards but their conversation does not go well. On Luna, Avasarala starts investigating the possible involvement of Inaros in the science vessel attack.

S5E2 · Churn

Drummer accidentally discovers the remains of Klaes Ashford's ship with great remorse. Amos returns to Earth for his recently deceased foster mother, Lydia, and finds her senior boyfriend Charles is about to be evicted. Amos confronts crime boss Erich to secure Charles' housing, and plans to meet someone before leaving his home planet forever. On Tycho Station, Holden receives a message from Monica, the reporter who claims to have proof of a plot stealing the protomolecule, but later finds she is missing. He eventually rescues Monica, nearly dead, from a shipping container on Tycho. On Mars, Bobbie reveals to Alex that she has been investigating Martian weapons trafficking with the help of Avasarala. Alex fails to approach Admiral Sauveterre, a possible trafficker, but finds himself a date with Sauveterre's charismatic personal assistant, Lt. Babbage. Avasarala's concerns about Inaros launching an attack on Earth still fall on deaf ears.

S5E3 · Mother

Drummer finds Ashford's abandoned ship, confirming his death. She extracts the recording in which Marco Inaros describes his plan to go after targets bigger than Tycho or Ceres, and sends it to Fred, who then forwards it to Avasarala. Drummer eventually decides against going after Inaros. Naomi travels to Pallas Station, where she reconnects with Belter friends Cyn and Karal. She eventually meets Filip, who is angry at her, and they take Naomi captive. On Mars, the meeting of Alex and Babbage is fruitless. Later, Alex is attacked by two assailants and is only saved by Bobbie. On Tycho, Monica shows Holden and Fred a video of a fight that occurred on Ceres in which Cortazar can be identified. Sakai, the chief engineer of Tycho, identifies the people who purchased the shipping container in which Monica was discovered, but they find them already killed. Bull, the chief of security, concludes they have a traitor on Tycho working for Marco Inaros. The first of Inaros' stealth asteroids collides with Earth.

S5E4 · Gaugamela

Alex and Bobbie take the Razorback, now named Screaming Firehawk, and follow a group of Martian ships they suspect of weapons trafficking. Amos is visiting Clarissa in a high-security underground prison when the second asteroid hits, triggering a lockdown. Avasarala contacts Nancy Gao, warning her of the stealth asteroids. Gao orders the Watchtower satellites set for spotting further asteroids right before the third asteroid hits near her plane, destroying it. Her order still goes out, and the next asteroid is spotted and neutralized. On Tycho, the ship coming for the container holding Monica attacks the station. The traitor is revealed to be Sakai, who assassinates Fred Johnson and helps steal the sample of the protomolecule kept on the station. Filip takes Naomi to Marco's ship, where she is locked up. Marco, now in possession of the protomolecule, broadcasts a speech claiming responsibility for the stealth asteroid attacks and declaring his Free Navy as the ruling power of the Sol system as well as all the ring gates.

S5E5 · Down and Out

Drummer receives Inaros' offer to meet, which she and her crew accept. In the aftermath of the second asteroid impact, Amos and Clarissa are trapped in an underground cell at the prison. Along with three guards and another modded prisoner, they are able to break into a locked-off service ladder in the elevator and climb to the scorched surface. Naomi is held on Marco's ship, where she makes a concealed but futile attempt to assassinate Marco Inaros. She discerns that the Rocinante' s drive has been sabotaged and manages to send a message to Holden, who avoids launching the Rocinante just in time. Pursuing the Martian ship Barkeith, Alex and Bobbie witness its rendezvous with Belters, but are later spotted and have to fend off a torpedo launch with a last-ditch core dump, leaving their fates uncertain drifting into the void.

S5E6 · Tribes

Holden takes the Rocinante out after verifying their software is valid. Avasarala meets the new Secretary-General, who is out of depth in the crisis and asks for her support. Bobbie and Alex use some trickery to defeat a Belter boarding party and their ship. Drummer's clan meets with Marco. After some tense discussion, they reluctantly align with him. While talking with Filip, Drummer talks about Naomi and her role on board the Behemoth. Filip asks Naomi for details while Marco watches in the surveillance system. Amos and Clarissa avoid government relief sites to make their own way planning to get to Baltimore. Amos mentions to Clarissa his need to rejoin his crew.

S5E7 · Oyedeng

Naomi and Filip Inaros talk about their pasts and future. Naomi attempts to warn her son that Marco is an opportunist and gives her side of the story for leaving his father. Cyn also confesses to Naomi that he helped Marco hide their son from her. Holden joins forces with Bobbie and Alex to hunt down the ship Zmeya and to rescue Naomi. During the course of their investigation, Alex discovers that the Martians are selling ships to Marco's Free Navy. Holden, Bull, and Monica track down the Zmeya and disable it following a gun battle. However, the Belter crew destroy the Zmeya before Holden and his team can investigate the ship. Seeking to curry Filip's favor, Marco convinces his son to lend his personal ship Chetzemoka for a plot to trap the Rocinante while naming him as his successor. Marco reveals this plot to Naomi, who flees out the airlock towards the derelict Chetzemoka, having injected herself with hyper-oxygenated blood. Cyn attempts to stop her but perishes.

S5E8 · Hard Vacuum

Following Naomi's escape, a grieving Marco blames Filip for Cyn's death. Aboard the Rocinante, Holden and his team find no traces of the protomolecule during an analysis of the Zmeya 's wreckage. Holden resolves to find and rescue Naomi. While collecting salvage from wrecked warships, Drummer, who is uneasy about following Marco, clashes with Karal, who supports Marco's cause. Back on Earth, Avasarala supports the new interim UN Secretary-General David Paster, who is learning the ropes of his job. At the first UN Security Council meeting, Avasarala opposes Admiral Delgado's proposal to launch a punitive strike against Belter civilians on Pallas station. Meanwhile, Amos and Clarissa travel to a devastated Baltimore where they convince the criminal Erich that they can access a sub-orbital shuttle at a holiday retreat in Lake Winnipesaukee. In space, Naomi discovers that Marco had rigged the Chetzemoka with a bomb and fake distress message in order to destroy the Rocinante. After several attempts, Naomi manages to distort the fake distress message, which is picked up by a suspicious Holden and Drummer.

S5E9 · Winnipesaukee

Amos, Clarissa, Erich and the rest of their group reach Lake Winnipesaukee, attempting to commandeer a suborbital shuttle. As they prepare the shuttle for departure, Clarissa persuades him to allow some of the winter staff of the now-abandoned mansions to join them, to escape the recent disaster. Avasarala learns that Pallas Station has been attacked by Earth forces, and leads a mass resignation from the Cabinet that results in the current Secretary General standing down; she later accepts the nomination to return to the position. Drummer learns that Naomi is still alive aboard the Chetzemoka but is powerless to aid her, as Inaros orders Drummer to lead a strike force to destroy her friends on the Rocinante. Filip is manipulated by Marco once again with his mother's survival. Alex and Bobbie realize they are closer to Chetzemoka than Holden is, and alter course in the Razorback. On Earth, a private security detail ambushes Amos's party in the evening darkness, but after a brutal firefight, they are able to successfully launch, bound for Luna.

S5E10 · Nemesis Games

As the Rocinante finds itself surrounded by Free Navy ships, Drummer betrays Karal to save it from destruction. Drummer loses members of her crew in protest, and Inaros executes her associate in retaliation. On the Chetzemoka, Naomi breaks a pressure valve, putting the ship into a spin to prevent docking. As Alex attempts a docking maneuver with the Razorback anyway, Naomi flees the Chetzemoka in her suit and attempts to warn them off. Bobbie rescues Naomi before her life support gives out, but Alex dies from a stroke during the high-G encounter. The Rocinante's crew reunites on Luna, where Amos tricks Holden into giving Clarissa safe refuge, Bobbie joins newly-elected Avasarala's team, and Chrisjen signals she intends to use the Rocinante's crew as a role model for winning the war against Inaros. Free Navy ships, aided by Medina Station and rogue Martian warships commanded by Admiral Sauveterre attack and destroy the joint Earth and Mars garrison at the Ring. As the ex-MCRN Barkeith transits a ring gate en route to Laconia, a world beyond the ring space, the entities that destroyed the Ring Builders begin to awaken and devour the ship. Meanwhile an alien superstructure orbiting Laconia suddenly blooms with the protomolecule.