The Expanse

The Rocinante crew discovers an important resource on an asteroid, while Avasarala and Bobbie manage the consequences of a crisis on Earth. At the same time, Drummer must make a challenging personal choice, and on Ceres, Marco and Filip struggle with internal disagreements.

Holden and the Rocinante crew undertake a high-stakes mission with the potential to shift the balance of the ongoing war, a task complicated by the presence of an unexpected passenger. Drummer enters into a fragile alliance, while Filip wrestles with growing feelings of guilt.

Avasarala commands a combined Earth and Martian fleet in a military operation targeting Marco, intensifying the ongoing conflict. Strained relations develop between Filip and Marco as their partnership begins to falter. At the same time, Holden and Naomi become entangled in a perilous and intimate struggle when the Rocinante is suddenly involved in combat.

Holden deals with growing tension among his crew following the revelation of a controversial decision. At the same time, on Ceres, Avasarala grapples with an escalating humanitarian crisis, while Drummer's faction executes a high-risk raid. Filip, newly assigned to a repair skiff, discovers something unexpected.

Drummer arrives at Ceres with her fleet to assist in a relief operation, while Holden attempts to persuade Avasarala to disclose vital information to prevent a potential disaster, only to find she has her own demands. Meanwhile, Amos and Bobbie take a brief break at the station, and Naomi experiences a challenging and long-awaited reunion.

The season finale features a large-scale battle between Inners, Belters, and the Rocinante crew against Marco and the Free Navy, as they fight to determine the future of the Solar System, the Ring Gates, and humanity.