With the inner planets now engaged in a full-scale war with Marco Inaros' growing coalition of Belters, the Rocinante makes a discovery that could help turn the tide. Filip struggles under his father's shadow on Ceres, while Drummer's crew struggle over a hard decision.

Bobbie joins the Rocinante crew as they undertake a dangerous mission to eliminate Marco's spotter ship, responsible for the ongoing meteor assault on Earth. Drummer finds a new ally in the Belt, and Filip wrestles with his guilt.

Avasarala joins the Earth-Mars fleet in taking control of Ceres, only to find that Marco has left them with a potential humanitarian crisis. As the Roci heads for Ceres the enemy undertakes a bold attack, forcing the crew into an unexpected fight for their lives.

Filip finds himself demoted to repair duty after standing up to his father, while Holden's controversial decision sets him at odds with his crew. Drummer and her new allies raid one of Marco's supply depots.

Drummer receives a cold welcome from the Inners when she and her coalition arrive on Ceres, where the U.N. Secretary General is looking for an ally against Marco. While Amos reconsiders his future, Holden warns Avasarala about his discovery of a series of ships gone missing at the Ring Gate.

Hoping to prevent Marco from entrenching his position inside the Ring, a tenuous coalition of Inners and Belters targets the Free Navy for a final confrontation that will reshape the system for a generation.