The fleet survived five centuries in hiding. Now it has to prove it can fight.

Fourteen days ago, the Ark Fleet fired its first shots in five hundred years. The Dominion patrol is gone. But the intelligence the fleet recovered changes everything — forty-one thousand humans are living under alien occupation on a frontier mining world called Northfall. Labor units. Compliance codes. A population that named its own prison and kept counting its dead.

Captain Will Statham has the fleet, the firepower, and an eleven-week window before the Dominion sends something the Ark Fleet can't survive. Commander Scarlett Virek has the operational plan — and the math that says the plan's margins are razor-thin.

The garrison is standard strength. The orbital approach is mapped. The colonial population is an asset the fleet needs and a liability it can't afford. And the Dominion's newest weapons platform — the Eradicator — has never been deployed against a species that fights back.

Liberating Northfall means holding it. Holding it means defending forty-one thousand civilians against an empire that classifies humanity as a resource extraction problem. And the reinforcement fleet heading for Tethys is three times the size of the force the Ark Fleet just destroyed.

The Rim is where humanity starts taking ground. The question is what it costs.

Perfect for fans of Glynn Stewart, Jack Campbell, and B.V. Larson. Fleet warfare. Colonial liberation. No filler. No chosen ones. Just the math and the people who have to live with it.