Tokyo Metropolitan Police Department Outsider

The ace of the Criminal Division of the Sakuracho Central Agency, Hasumi Kosuke (played by Takeshi Hamada), immediately rushed to the scene after hearing the news that the suspicious man refused to be questioned and fled. Calmly convince the hostage-taker to surrender with just one breath... At this moment, suddenly, a man dressed in a underworld dressed in a double-breasted suit and sunglasses broke in! Subdued suspicious persons with skillful movements. The man who calmed down the situation in an instant was none other than Hideyoshi Kagawa (played by Hidetoshi Nishijima), who was transferred to the Criminal Division. He is an uncle of the criminal police who was transferred from the Organized Crime Countermeasures Department of this agency, the so-called "Maruran" (a common name for the "Organized Crime Countermeasures Investigator")... It was at this time that the housekeeper who worked at the university professor's house was assassinated. Ying'er and Kosuke form a partner to investigate.,In the process of investigating together.,Ying'er has a sense of disobedience to Kosuke, everything is perfect...!? In such a situation, the two began to take care of the newly appointed criminal policeman Nao Mizuki (played by Moe Kamishiraishi), but in fact Nao was the daughter of the deputy director of the Metropolitan Police Department——!?