Sennett, Godfrey and the rest of Station 86 are trying to put their society back in order after the Core attack. Then a mysterious ship from a dying station arrives, bringing artificially intelligent robotic, murderous dogs.
Godfrey, Mason and April must get to the hospital safely, while Sennett is trying to protect Marshal's Joy and Howard. But the AI dogs are nothing compared to the terrors they left behind on their own station.