Inami and Tamaru work at the Public Security Mobile Investigation Unit Special Investigation Team, a team made up of specialists with different expertise. Inami tackles criminals with showy maneuvers, while Tamaru corners criminals with cool calculation. Together, the team tackles terrorists, new religious cults, military spies, secret narcotics organisations and complicit politicians.

After the attack on the Chief Cabinet Secretary, the next duty of the fourth office will be to guard the National Assembly building. In the midst of security, Ogata keeps Inoue away from the main conference hall and puts his well-thought-out plan into action, and the parliament building is controlled by SPs and terrorists who support the revolution. Inoue notices something strange and starts to fight against the terrorists to stop Ogata.