Angered by his boss, a strident and selfish production company employee, Takasugi, quits his job as a director and finds himself saddled by a 10 million yen ($100,000) debt. He decides to hatch a plot, conspiring with a former assistant director friend named Sonobe, to kidnap a very rich family’s beloved dog for ransom. But then a mysterious woman, Natsuko, shows up as well as the son of the family whose dog they plan to kidnap, both wanting in on the plot. Then things really take a complicated turn when Takasugi is marked by a real kidnapper to take the blame for a separate child kidnapping in this thrilling, humor-filled and moving suspense.

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.

The story takes place in the time span from early evening on Friday to Saturday morning, centering around Miyata, the protagonist who is in the midst of misery, and how he comes close to grasping happiness. Three episodes as seen through the viewpoints of five people- 'a man who is devastated because he has lost the love of his life,' 'a man who is tired of being a detective,' 'a yakuza who is having trouble running his organization,' 'a woman who is thrown into despair because her fiancee was two-timing her,' and 'a con woman who twists men around her finger'- are sandwiched between a short prologue and epilogue. The cause and effect behind these apparently simple episodes surface one after another, and the unexpected relation between them bring friendship and the complicated nature of humans to light.