Inside the Metropolitan Police’s Organized Crime Task Force, a help line has been set up to assist repentant organized criminals in their effort to permanently cut ties with their syndicate. Dubbed the “Going straight hotline”, it is spearheaded by a fearless female police officer Bakushu Nagamitsu, played by former AKB48 member Yuko Oshima, who stands ready to crush anyone threatening those under her protective custody no matter how powerful that threat may be. Depicting the struggles and maturation of Bakushu and those around her, “Yamegoku” is a groundbreaking police drama with great heart and soul not seen since “SPEC” and “Keizoku”.

New York. Ataru belongs to the Savant Program Branch of the FBI, which has just been hit by an explosive. Meanwhile, similar tactics have been used to blow up electric rail lines in Tokyo. Wheelchair-confined chief of the Tokyo Metropolitan Police, Akiho Hoshi, has just put agent Sawa and his team at the First Investigative Division on the case when Larry and Ataru appear on the investigation headquarters. According to Larry, the two bombing plots originated from a financial business zone in London, orchestrated via server by a computer virus dubbed "Wizard". The virus was developed by a Brazilian-Japanese named Madoka with whom Sawa and his force had previously crossed paths as a suspect in a serial murder case. Like Ataru, Madoka bears traits similar to those of a savant and was also formerly an SPB candidate who had received training. The two remotely perpetrated bombings put the FBI and Tokyo Metropolitan Police Agency in hot pursuit of Madoka.

Ataru Returns!
Tasuku, the young brother of Ataru who never appeared in the television drama emerges here as the lead suspect in a serial killing case.
Ataru flies from New York to rescue his brother and discover the truth behind the murders which bear a strong resemblance to the "Crucifixion Murders" that shocked the United States in 1997. He is joined in the effort by 1st Crime Division investigator, Sawa, and ex-cop and current private detective, Maiko, for a reunion of the "Ataru Trio." But their movement is checked by Ataru's arch rival, who received the same special skills FBI training as he, and who seeks a final showdown.

Autistic savant, Ataru, has a very unique gift. He is capable of uttering “words” that help the police in their investigations “discover, observe, perceive and deduce” evidence they had hitherto failed to notice. In fact, like a chess genius, Ataru has the ability to think tens of moves ahead of the average person. While it’s obvious to anyone that his favorite foods are tomato ketchup and honey mustard, Ataru struggles with communication, often speaking in conundrums, behaving erratically and even lapsing into hysteric fits. While his uniquely-wired brain enables him to fire off “key words” that are integrally linked to solving crime, the task of piecing his utterances together like a jigsaw puzzle falls to Detective Maiko Ebina and superior officer, Sawa. Together, they create an unlikely and dynamic trio solving one case after another.