Night Raid's base is discovered and attacked by one of the Jaegers, Dr. Stylish. However, as the doctor seeks to acquire the assassins' Teigu for private experimentation, he doesn't inform the rest of the Jaeger, but instead relies on his own personal army of surgically-altered soldiers to assault them. Reinforcements arrive to assist Tatsumi and his friends in the ensuing battle, and then join the team.
Afterwards, Night Raid relocate to a dangerous region to train and leave behind their compromised base. A new species of Dangerous Beast surfaces and wreaks havoc around the capital, indicating that there might be another enemy hiding in the shadows.
A special bonus chapter follows the fate of some ordinary village girls, and highlights the decadence and cruelty of the decaying empire.