Summary:
On Ganymede (a Jovian moon sporting crops for the outer planets, where many Belter women go to give birth), a young girl named Mei (who has Myers-Skelton Premature Immunosenescence requiring daily medication) is taken out of class by her doctor (Dr. Strictland) and a lady posing as her mother. They take her to a lab containing a glass case housing someone infected by the protomolecule.
Martian marine Bobbie (Roberta Draper) is patrolling Ganymede. Her squad's comms drop out and they are (seemingly) attacked by Earth marines; it turns out, however, that the UN troops were fleeing from someone infected with protomolecule. Shooting the monster doesn't seem to damage it, and it proceeds to rip the marines apart (even one in a giant mech) with its bare hands. It's just about to kill Bobbie when it grows another arm, then promptly explodes in a ball of fire. Bobbie wakes up days later in a hospital. Her superiors don't believe her story about the monster until they watch the video from her gun cam.
Space battles around Ganymede between the UNN and the MCRN causes one of the gigantic orbital mirrors (used to direct sunlight to crops) to crash into the planet, destroying the lab where Praxidike Meng, botanical engineer, works.
He evacuates and goes to daycare to retrieve his daughter Mei, only to find she's been taken by Dr. Strickland and a lady the computer system said was her mom, but actually wasn't. Prax searches every day amongst all the casualties for his daughter, but she never turns up. His brother, whose son is also missing, leaves without his son.
Holden and the crew of the Rocinante (Naomi, Amos, and Alex) are doing mundane work for Fred Johnson (leader of the OPA on Tycho Station) hunting down space pirates when Fred calls them back because of the Ganymede situation. They take an inconspicuous ship, the Somnambulist (the one they saved from pirates), to Ganymede (Alex hangs back in the Roci) to check out the situation.
Chrisjen Avasarala, assistant to the undersecretary of executive administration on Earth, is trying to stave off the coming war between Earth and Mars. She notices there's a spike in activity around Venus (where the protomolecule-infected Eros station crashed after the "Eros incident") during the Ganymede attack; she interviews Jules-Pierre Mao, thinking perhaps "Julie" may have contacted him from Venus. He won't admit to anything, but she thinks he knows much more than he's letting on. She also gets intelligence reports saying Holden is on Ganymede, and that Admiral Nguyen has secretly been deploying Earth ships there as well. She pulls some strings and pulls all the ships back, averting war.
Prax give up his food to a hacker in exchange for videos from Mei's daycare. He finds the videos of the woman and the doctor, but the hacker won't show him more unless Prax gets him some chicken. Prax recognizes Holden from his previous broadcasts, and ask Holden to help him find Mei. The hacker gets Prax the videos he wants after they bring him a case of chicken (and after Amos nearly beats him to death for trying to shake them down). The videos showing Mei's abductors taking her into and old, unused corridor just before the attacks started.
On the way to the abandoned corridor they encounter fake MCRN resistance (Pinkwater security), but Holden agrees to get them off Ganymede if they join forces, and they agree. They breach the corridor and find a lab; inside they find the body of Prax's brother's son, who has apparently been infected with the protomolecule. In the next room over they encounter a room full of armed people having a pizza party; Holden tries to be politic, but Prax goes off half-cocked about his daughter and cocks his gun, causing a firefight to immediately break out. Holden's squad is much quicker and manage to shoot everyone first.
They encounter more resistance the farther into the complex they go, and many of the Pinkwater people are killed; it seems the unknown players were evacuating through a secret docking port, while simultaneously fighting against an unknown third party. In the lab equipment wreckage they find fine, black filaments... Holden freaks the fuck out and calls for immediate retreat.
Just outside their ship, they're captured by a UN security force (sent by Avasarala), but manage to escape; however, Ganymede is then attacked by nukes and/or gauss rounds. They try to backtrack to the secret landing pad but find it blocked from all the damage, and are forced to go outside the dome in the vacuum of space. Alex comes in hot in the Roci and they manage to escape (after avoiding torpedoes fired from seemingly all the ships in orbit).
Avasarala's boss, Sadavir Errinwright (UN Undersecretary of Executive Administration) puts her on the Venus project and gives her a blank check--she quickly realizes this is merely politicking to get her off the Mars conflict, presumably by Adm. Nguyen, since he somehow got even more ships to send to Ganymede.
Avasarala hires Bobbie to help her look into Venus (since Bobbie's seen the monsters firsthand and Avasarala wants to work with Mars, not against them), and hands over all her intel. An hour before the fighting on Ganymede, the warship Arboghast around Venus was blown up--stripped apart in layers and disassembled, like the protomolecule wanted to learn how ships work.
On the Roci, they find that during their escape, a monster pulled open the cargo bay door with its bare hands and has been stowing away in there, in the vacuum, for days. Holden and Amos try to attack it, but attacks them; it flings a mag-locked pallet at Holden and traps him there. They shoot it a few times and it goes back to hibernating. Prax notices that the protomolecule seems to be constrained to its host, instead of reallocating its bits around like on Eros, and that it's feeding off a radiation leak in the corner. Prax goes EVA and throws some radioactive bait past the monster; it follows out after the bait, but leaves a bomb in the cargo bay. Alex does a full burn with the Roci, killing the monster; however, this causes the bomb in the cargo bay to go off, sending the ship into a spin and killing the reactor and thrusters.
Bobbie notices Avasarala's assistant, Soren, taking a datachip somewhere he shouldn't be going, so she follows him to a bar. He gives the data to someone militaristic looking, clearly disguised as a civilian. Soren tries to cover his ass by telling Avasarala that Bobbie is actually a Martian Intelligence operative, but she instantly realizes he's lying and that he must've been the one leaking/withholding info for Nguyen. She further deduces that Errinwright must be responsible for the monster(s) on Ganymede, working with Mao-Kwikowski to weaponize the protomolecule. She calls to question Errinwright, and he knows that she knows--so he tells her she'll soon be flying to Ganymede on a Mao-Kwik yacht. She has no choice but to acquiesce, otherwise she'll lose her political power. She tells Bobbie she's the only one she can trust and tells her she's coming along.
Bobbie and Avasarala get on Mao's yacht, the Guanshiyin. Mao is supposed to be going along too, but he leaves and Avasarala realizes she's fucked.
The Roci arrives at Tycho. Naomi, who has been fed up with Holden acting like Detective Miller (i.e. shoot first, ask questions later), breaks up with him and quits. Holden demands Fred to tell him if he was involved with Ganymede; Fred fires him for his constant insubordination and tells him "no" on the way out. Surprisingly, Holden feels like a weight has been lifted off his chest now that he's free to take whatever jobs he wants.
Prax tries to raise money to search for Mei but can't afford to hire anyone; Amos is taken aback and assures him they're already going to do it. Holden broadcast a message about Mei, Dr. Strickland, and the protomolecule, and within hours they get hundreds of thousands of dollars in donations. Holden apologizes to Naomi and she's back on board--but they're still broken up. Prax gets a message from a former colleague of Strickland who says "Strickland" is merely an alias of a Dr. Carlos Merrian. He formerly worked at CMTU biosciences lab, on biological development constraint systems, but quit over ethics violations and went to work for Protogen.
Prax puts 2 and 2 together and believes that Strickland abducted Mei because of her compromised immune system, since it wouldn't fight back against the protomolecule, the way the previous monsters have; they've been engineered with a bomb as a failsafe, so if they get out of control they can be destroyed--however, the protomolecule eventually adapts and ejects the bomb.
They realize that there must have been 2 monsters on Ganymede: the one they accidentally let out when they stormed the lab, and another that was presumably let loose just to see what would happen. Prax reasons that the monsters must have been shipped in from somewhere close, otherwise they would've adapted and ejected their bombs. He follows the money trail and concludes they must be on Jupiter's moon Io.
Prax starts getting death threats instead of donations; his wife Nicola put out a broadcast saying that Prax beat her and abused Mei. Avasarala sees the message and knows that Errinwright paid her off in order to stop Holden since he's getting too close to the truth. She gets more intel about Venus,
and her consultant thinks that the spikes look like neurons firing, meaning it it can think. Admiral Souther contacts her and says Nguyen sent 6 destroyers after Holden; she wants to send a message out to warn him, but Mao's crew won't let her. Bobbie puts on her mechanized combat armor (snuck onto the ship in a crate labelled "formal wear") and fights her way to the bridge. The captain says "I just work here" and surrenders, but the yacht is too slow to make it to Holden in time. Luckily, the Razorback racing pinnace is on board.
Holden gathers the crew together to figure out who they are and what they want to do in the future. They take a vote and decide to keep him the captain; Holden says they're going to incorporate, and each of them will own part of the Roci. Naomi is glad to see the old Holden back and takes him back to "their" bunk.
Avasarala tells Holden to meet her, and comes aboard; she explains the dire situation they're in. They throw together a fake news video saying she's there on behalf of the UN to meet with Holden and a Mars representative (Bobbie) as a multilateral investigation of Ganymede. She also decries Prax's wife as mentally ill, exploited by the media--then they broadcast the message. She shows the Roci crew Bobbie's suit video, which confirms Prax's hypothesis about the protomolecule ejecting its failsafe. She shows them the Venus data and Prax further realizes that Venus is communicating with the monsters in real time--it knows what they know and vice versa.
Avasarala puts all this info into a video and sends it to Errinwright; however, instead of pulling back, he sends the warships toward them even faster. Avasarala sends the info to Admirals Souther and Leniki, who she trusts. Bobbie suggests they make a plea to the Martians for backup; Avasarala tells them she's being attacked by a rogue element of the UN Navy while on a peacekeeping mission to Jupiter, and to fucking help her.
The Martian cruiser fires torpedoes first, and when the UN ships turn to fire at Martians, Bobbie fires the torpedoes that take out the first UN ship--turning the tide of battle in their favor. Some torpedoes were fired at the Roci, but PDCs took them out; however, 3 stray PDC shots go through Prax's quarters and need repaired. The MCRN ships resupply them, and Holden gets Bobbie an armcannon for her suit with incendiary rounds.
Avasarala tells the Secretary-General Esteban Sorrento-Gillis what the situation is; he condemns Nguyen's actions and forms an investigative committee. She believes Errinwright is finished. Bobbie watches her armcam video over and over; she determines that the monster's failsafe might kick in when it receives too much damage, and that it's only good at attacking straight on.
Admiral Souther joins his fleet with the Martian and they head to Io. Nguyen has dozens of ships in orbit, making this the largest fleet action in history. From aboard the UNN Agatha King, Nguyen threatens to send protomolecule weapons at Mars; Mars threatens to glass the moon in return. The secretary-general recalls Nguyen to earth and all shit hits the fan; Nguyen shoots hundreds of protomolecule monsters from the surface of Io, launched at Mars, then tries to fastburn out of there. The monsters cut thrust and Nguyen shuts off their transponders, so they can't even be tracked. One of the monster makes it onto the King, and Nguyen immediately surrenders--but Avasarala says there's no way in hell anyone is going on that ship. Even though he's a dead man walking, Nguyen refuses to turn the transponders back on, so no one knows how many monsters made it past the fleet to Mars. Holden sends Bobbie, Amos, and Prax down to Io; he's going over to the King to turn transponders on.
The monster breached the reactor on the King, so Holden has to wear a radiation suit instead of proper armor. He takes the Razorback to King and is attacked by a soldier hiding in a storage locker; luckily, he thinks Holden's an admiral (Holden got the admiral codes from Souther to override the door) and helps him get to the CIC. The infected are all congregated in the galley, and they're all the new version of the vomit zombies with the glowing blue eyes. They run through and just barely make it up the elevator to the CIC, where they find Nguyen still alive. He still won't give up the transponder codes, so Holden shoots him in the throat, mid-sentence. He find the ships's self destruct button, but there's no timer; the kid agrees to press it, since his suit was ripped running from the zombies, and he's as good as dead anyway (from the radiation). Holden leaves out an airlock and Larson blows the ship.
Io is tectonically unstable and highly radioactive. Amos and Prax go into the base while Bobbie stays outside to fight one of the monsters. Her incendiary rounds stop it from healing itself, but don't take it out. She runs away at 90 degree angles, and her theory about the monsters not being good at corners is correct. The monster can't catch her, so it starts tearing up big chunks of rocks and throwing them at her. She continues to dodge and shoot, but instead of the bomb going off and destroying it, it rips it off and throws it at her. It goes off near her feet, sending her flying and greatly damaging her suit. The monster sidles up and pukes on her, but seems curious about why she's not becoming infected. A tube comes out of its midsection and sprays goo all over her, probing her suit for entry points. Fortunately, Bobbie's gun comes back online and she blows its head off.
Prax and Amos find Strickland and the mystery woman in the lab, who turns out to be his handler. She tries to convince Strickland to flee with her, but he sees the writing on the wall and shoots her. Amos and Prax confront him and he says he was the one who kept the children safe, that they would've been infected without him, but they call him out on being a sociopath and Amos blows him apart with his auto shotgun. After a heartfelt reunion with Mei, they get her and the other kids back to the Roci, and Bobbie too.
Errinwright is "retired" and Avasarala gets his job as Undersecretary of Executive Administration. She tells Bobbie that anything she wants to do, Avasarala will make it happen. Holden tells his family to come to Luna and meet Naomi; turns out they're racist against Belters but they'll come anyway. Holden and Avasarala both meet with Jules-Pierre Mao and tell him off; she tells him he's going to be locked up and forced to watch her disassemble everything he's built--the ultimate punishment for a man like him. She puts Prax in charge of rebuilding Ganymede, much to his pleasure.
Fred Johnson, in a demonstration of his nuclear capabilities, nukes the protomolecule missle monsters when they get near Tycho station. This causes Venus to violently react by shooting black filaments thousands of kilometers long, bigger than Ceres Station or Ganymede, off of the surface and into space--swatting starships out of the way like gnats.
Detective Miller, covered in blue specks, appears to Holden and says "we gotta talk."
Review: 4 stars.
Caliban's war was a good read, very fast paced, but there wasn't much new plot-wise to differentiate it from Leviathan Wakes. In fact, it feels much smaller in scope than LW did, which is a step back, IMO.
As far as the new characters go, I really enjoyed Avasarala and all the politicking she introduced (it's kind of a shame her potty-mouth didn't make it to the TV show). Bobbie was a pretty cool character, but didn't really make a huge impression on me. Prax was fairly one-note, though he served well as the comic relief at times, bumbling things up one second, then piecing together complex scenarios in an instant with everyone scrambling to keep up. Still, he was kind of annoying, always going on and on about his damn daughter. I definitely missed having Miller around, and was really hoping he'd be back; it's a shame he didn't show up until the very end, but it was still a pretty exciting twist.
I was glad to get more of Amos's backstory: he was a prostitute's baby for guys that like to bang pregnant chicks; he escaped after he was "used up" as a whore himself. It explains a lot about him. I wish we'd learned more about Naomi though. And she and Holden breaking up and getting back together again over the course of a few chapters felt pretty rushed to boot.
As far as the ending goes, I felt it was pretty anticlimactic; the crew goes to the secret base, they find the doctor and the mystery woman (who wasn't really important at all), they shoot them and take the kids back--the end. I was much more interested in what was going to happen with Venus and Miller in the next book than what happened at the end of this book, TBH.
Still, it was a solid read and I definitely recommend it.