Detective Ukyo Sugishita confronts crime on the basis of his own convictions. He has a partner that works for him in the Special Task Unit. For the first 7 seasons, Ukyo’s first partner is Kaoru Kameyama. He is a good-natured, hot-tempered, straightforward and somewhat scattered detective. Beginning in Season 8, Takeru Kanbe replaces Kameyama. Contrary to his predecessor, Takeru is a lanky, cool, conceited and confident detective. From Season 11 to Season 13, Ukyo’s partner is a young detective Toru Kai. Toru is a son of Deputy Director-General of The National Police Agency. But he became a detective by his own effort. And starting with Season 14, Ukyo’s current partner is Wataru Kaburagi, an elite bureaucrat who came to the Metropolitan Police Department on temporary assignment. As the first partner without any career of a police officer, he will face challenging cases together with Ukyo.

The city is filled with countless urban legends. Strange incidents that occur in the midst of these legends lead people into a labyrinth... It is the five young detective hatchlings who take on these difficult cases. Overflowing with intellectual curiosity, they make the most of their abilities. They are full of intellectual curiosity and show their abilities to the fullest as they run through the city and get to the bottom of the mystery. And what lurks behind the scenes is a professional criminal planner... Through fierce battles with the enemy and encounters with various people, they are sometimes hurt, but they gradually grow up. This is a pop youth mystery that depicts the friendship and adventures of a group of talented detectives.

Sachiko and Yoshida are newlyweds, and have just moved into a newly-constructed apartment with completely white rooms. It’s reasonable to expect that they would be enjoying their newlywed life, but Sachiko is refusing to go along with Yoshida’s sexual demands. One day, Yoshida’s junior colleague, Kato, shows him a video. Its title is White Room: Evening Classroom Inspection, and in it a girl is shown holding a photograph of her mother against her thigh while engaged in fondling. But the astounding thing is that it is a room in their newly-constructed apartment! Yoshida stealthily takes the video home, but Sachiko sees what it contains.

This drama depicts the turbulent daily life of the heroine, who works in the family's tofu shop, and her father and daughter.