A sequel to Leviathan Wakes follows an alien monster's attack on the outer-planet territory of Ganymede that triggers instability throughout the solar system, prompting James Holden and the crew of the Rocinante to engage in peacekeeping efforts and search for a missing child. Original A Martian marine watches as her platoon is slaughtered by a monstrous supersoldier. On Earth, a politician struggles to prevent interplanetary war from re-igniting. And on Venus, an alien protomolecule has overrun the planet, wreaking massive, mysterious changes.