Shiratori Tatsuhiko works as a scout for Burst, a talent agency in Kabukichō, Shinjuku's red light district. In a business where money means everything Tatsuhiko finds himself in a constant struggle between rival talent scouts and the yakuza.

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.

Because of her past, 17-year-old Rio lives her days filling the emptiness in her heart with money—until one day, she meets a university professor named Kouki and falls in love.

Kaori is a single mother and she raises her high-school age daughter Futaba. Her daughter is in a rebellious phase and ignores her mother. Kaori decides to take measures to communicate with her daughter and also get some revenge. Kaori creates messages in her daughter's bento meals.

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.