Miller, Holden and the rest of the crew deal with the aftermath of their narrow escape from Eros; Martian Marine Gunnery Sergeant Bobbie Draper and her platoon witness the growing tension between Earth and Mars. 

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 the crew make a grim discovery about the protomolecule's power. Chrisjen risks treason to send a secret appeal to Johnson. 

Miller comes up with a dangerous plan to eradicate what's left of the protomolecule on Eros, but an infected asteroid takes them by surprise. 

The Rocinante chases an asteroid as it hurtles toward Earth and the UN attempts a desperate manoeuvre, but Miller makes a discovery that changes everything. 

Chrisjen tries to discover the truth about the Eros incident, Naomi plots her own course, and Draper tackles a mind-boggling danger on Ganymede. 

Preparations for the Earth/Mars peace conference increase tension on Erringwright. Draper is pressured to alter the account of the Ganymede attack. Dawes makes a daring attempt to steal power from Johnson. 

The Belter Revolution at Tycho Station predicts war. Holden and Naomi attempt to find answers by looking for a botanist who left Ganymede. 

Holden and the crew steal a ship to sneak onto Ganymede, Draper testifies about the firefight, and Chrisjen's spy provides shocking data from Venus. 

Errinwright makes a confession to Chrisjen and an angry Draper goes rogue. Prax takes the crew through Ganymede on a search for his daughter and answers. 

Draper finds the truth about the Ganymede attack and makes a desperate move. The Rocinante crew make a discovery of their own. 

Holden is obsessed with hunting the hybrid while Chrisjen risks negotiations with Mao, but Errinwright turns the tables on everyone. 

Holden's life is in jeopardy while the Rocinante crew attempt to eject the stowaway hybrid. Draper struggles to rescue Chrisjen from Mao's trap.