The maverick police department of the Ministry of Public Security (Sasahara Ryoko) is accidentally involved in the biggest crisis of his life. Daughter Meiyang's car suffered an explosion, then Meiyang was taken to the police hospital, but a group of armed mysterious people suddenly broke into the hospital and took the girl hostage again. The gangsters, under the leadership of their leader, Goto (Orange Ping), demanded that the police pay the privately misappropriated 8 billion yen as a ransom. In order to cover up the scandal, the vice minister of the police department, Jinjiang (Daisanlian), not only refused to pay the ransom, but also tried to send troops to break in. The other side used a killer's mace and threatened to release powerful bacteriological weapons in Tokyo. In order to save her daughter and stop the terrorist plot, Xueping tried to sneak into the hospital. In the process, she inevitably learned the darkest side of the police.