Graduating at the top of her class, elite detective candidate Jun Shibata is transferred to the section that handles cases deemed "unsolvable" by the department. Her partner, though a well-respected and experienced detective, has grown complacent after unsuccesfully pursuing these cases that many consider an exercise in futility. With her upper class breeding, her colleagues don't expect much from her either, but she suprises them all with her motivation and astounding powers of deduction. Well-constructed mysteries and colorful characters abound in this stylish and edgy police drama.

A rebellious ninja in 17th century Japan takes refuge with a fisherman and his family.

A foreign spy using the Sorge alias is assigned to Tokyo the capital of Japan just prior to the outbreak of World War II and in the midst of the Japanese imperial ambitions in Eastern Asia. The spy becomes acquainted with a sympathetic communist who like he is attached to the ideals of freedom and rule of the masses. Sorge is able to feed the Soviet Union useful information regarding the Axis allies and their movements in Asia and beyond.

When a political scandal exposes her father’s dark secret, aspiring politician Hoshino Matsuri is cast out, forcing her to rebuild her life while navigating a high-stakes emergency election.

As the Tokyo Olympics usher in a wave of rapid modernisation, the residents of Third Street face new beginnings as Mutsuko becomes involved with a seemingly perfect young doctor who may not be all he appears, while Chagawa struggles with his stalled writing career and what it truly means to be a father to the boy he has raised as his own.

In the Susukino red light district of Sapporo, a private detective (Yo Oizumi) drinks alcohol with his driver Takada (Ryuhei Matsuda) in his favourite bar. There he receives a phone call from a woman who identifies herself as Kyoko Kondo. The woman asks the detective to complete a simple task. The detective, having an excellent sense for danger, thinks the work is easy and accepts the case. The next day he begins the investigation.

Teenage Mutsuko comes to Tokyo for work but ends up at a repair shop. She befriends the owner's family. Neighbors Hiromi, writer Chagawa with admirer Junnosuke strive alongside them in postwar Tokyo's evolution.

Komikado-sensei is back!! And together with him, Mayuzumi and Hattori. This season, a new employee joins their team. Hanyu Haruki comes from a rich family. His father owns a highly profitable trading company, while his mother is a children's books writer. Hanyu has lived in England, Saudi Arabia and USA, before returning to Japan to sit for his bar exam. After finishing his apprenticeship, he joins the Public Prosecutor department. To broaden his experience, Hanyu is loaned out to Komikado's law firm.