Holden and the crew face off with a Protomolecule stowaway while Bobbie tries to save Avasarala and Coyter.
Errinwright makes some power moves while the situation at Ganymede becomes more dire.
Holden and company get closer and closer to the Protomolecule and Bobbie goes rogue back on Earth.
Errinwright comes clean with Avasarala while Holden and company continue searching for Prax's daughter on Ganymede.
Holden and the crew head to Ganymede while Bobbie arrives on Earth to attend the summit talks with the Martian delegation.
The magnificent space opera thankfully will be back with another new season next year.
The human elements and scientific accuracy make The Expanse unique among it's peers in the genre and the showrunners know it.