[1] Natsuki Sahara (Takeru Satoh) is a rookie detective who was assigned to the Ginza Police Station, where he finds himself partnered with his estranged father Akimura Shimao (Atsuro Watabe).

[2] Natsuki is a caring emotional type, who tries to do the right thing, while his father (referred to as Gentle-san because he is always drinking Gentle coffee) is lackadaisical about his job, and largely focused on fashion.

The two are generally opposite type of characters, and to heighten the friction, Natsuki holds the fact his father, Akimua abandoned his family (including his sister, Shinobu, played by Suzu Hirose) when they were young against them, they work well together in cases, successfully solving a number co crimes.

Her father and Akimura were working together, when he was killed by a mysterious serial killer (Kaizuka Takehisa, played by Oikawa Mitsuhiro), who kills people while listening to opera.

The three work together in the investigative team at the Ginza police station, with a slightly unusual team, including Hisashi Koga "the Bachelor," Toshifumi Inaki "the Chaser," Kaoru Togashi "the Skunk," Kouji Takano, and their boss, Kensuke Kagiyama.