Hideki Inada

Akira Mochizuki survived a kidnapping as a child. Now, she's a detective, and there are signs that the kidnapper may be back again after 20 years.

Natsumi Yukihira (Ryoko Shinohara) receives secret documents of an organization that controls the country from the shadows. Because of this, Natsumi's ex-husband, Kazuo Sato (Teruyuki Kagawa) pays a terrible price. Natsumi goes back to the Investigation #1 of Tokyo Metropolitan Police Department to take on the organization, but Natsumi becomes involved in a new case. She gets closer to the final enemy.

Ayumi Nitta is a member of a hospital cleaning staff and suffers from extreme social anxiety. After having a one-night stand with genius surgeon and sex addict Wataru Makino, Ayumi discovers she’s pregnant. However, when she tells Wataru, he dismisses her claim as a bad April Fools joke. Refusing to believe he could possibly be the father of Ayumi’s baby after just one night together, Wataru takes a woman named Reiko on a date to an Italian restaurant. However, Ayumi also shows up, leading to a major incident.

Kazuhiko Kogure, who is a 2nd grade student in middle school, falls off from one of the school's rooftop. There were other male students on the roof when Kazuhiko Kogure fell off. According to the other students there, Kazuhiko Kogure tried to jump to another school building, but missed. Fortunately, Kazuhiko Kogure only fractured his leg and ribs. According to Kazuhiko Kogure's mother Hidemi, the school insists it was students playing around and did not involve bullying. Hidemi though, doesn't believe it, because Kazuhiko Kogure has a fear of heights. Hidemi goes to see attorney Machiko Mayuzumi and Machiko decides to take her case, but she asks for fellow attorney Kensuke Komikado's help. Meanwhile, the school hires attorney Teshigahara Isao.

After detective Natsumi Yukihira brings an end to the police hospital terrorist case, Natsumi is transferred to the Nishimonbetsu Police Station in Hokkaido. Meanwhile, a series of grotesque murders occurs in downtown Tokyo involving nails placed in the body of the victims. The fingerprint of Natsumi's ex-husband, freelancer journalist Kazuo Sato, is found on the the body of a victim and Kazuo is placed on the most wanted list. Soon after, Kazuo finds Natsumi and hands her a USB memory stick. The device contains information on a secret organization within the police department. Kazuo tells Natsumi that the series of murders are warnings and suspects become the next victims. Natsumi is then arrested as a suspect. Tokyo prosecutor Katsuaki Murakami appears at the Nishimonbetsu Police Station to investigate.

When a devoted detective probes the suspicious death of her father, she uncovers massive corruption and finds herself in grave danger.

The movie is part of the Kindaichi TV movie series. Kindaichi is played by actor Goro Inagaki. The character's grandfather began with the written word. Kousuke Kindaichi started life in the novels of Seishi Yokomizo, written and set in post-war Japan. Inspired by Arthur Conan Doyle and Agatha Christie, Kindaichi is still very much a unique character, giving the Japanese their very own literary hero-detective. Young Hajime Kindaichi is a young man with bad dandruff and worse dress-sense (decades before Columbo), who wears a trademark, scruffy sunhat. He also happens to be better than the police at deductive reasoning. Having gained publicity for solving a high-profile murder case, the detectives allow him to work with them again. This story is slimmer than the twisty plots of Inugami and Village, but is graced by the presence of Chiaki Kuriyama (Battle Royale, Kill Bill Vol. 1, The Great Yokai War) in the title role.