Having left the Marine Corps, former Gunnery Sergeant Torin Kerr is attempting to build a new life with salvage operator Craig Ryder. Turns out, civilian life is a lot rougher than she'd imagined. Torin is left for dead when pirates attack their spaceship and take Craig prisoner. But "left for dead" has never stopped Torin. Determined to rescue Craig, she calls in her Marines. And that's when her mission expands to stopping the pirates from changing the balance of power in known space.