When a fanatical religious group illegally annexes an asteroid big enough to eradicate life on Earth, the United States, Russia, Northern China and the South Asian Alliance set aside their differences to deal with the threat. But as the joint mission turns into a massacre, it becomes clear that someone onboard the USS Michaelson is selling secrets to the Alliance.

To uncover the traitor, legal officer Lieutenant Paul Sinclair has to walk the dangerous line between duty and honor, and become a spy among his own crew.