Dangerous hacker group “Phantom 20” is known internationally. They begin an attack on Hikari Bank in Japan. Kenjiro Namikoshi (Teruyuki Kagawa) is the chief of the criminal investigation section at the Tokyo Metropolitan Police Department. He leads the investigation into the group. Kenjiro Namikoshi thinks of Kogoro Akechi (Hidetoshi Nishijima) who holds vast knowledge on hacking and leads BD team hacker group. To ask him for advisor help on the investigation, Kenjiro Namikoshi sends Yoshio Kobayashi (Atsushi Ito).

Shuichi Tsujiyama (Takumi Saito) is a broke private investigator. While on a job assignment, he is about to catch a crucial moment by taking a picture, but Naomi Arai (Fumi Nikaido) misunderstands the situation. Shuichi Tsujiyama and Naomi Arai struggle physically. Because of this, Shuichi Tsujiyama misses his crucial photo opportunity. Kimie Hasenuma (Mari Natsuki) is a housekeeper who has been employed by Naomi Arai for many years. Kimie Hasenuma asks Shuichi Tsujiyama to be Naomi Arai’s bodyguard.

Shiho works as a neurosurgeon at Nishitokyo General Hospital. She decides to quit her profession after hallucinating during surgery. Her ex-teacher Masayuki Kitabatake is the director at Tokyo University Hospital and he persuades Shiho to work at his hospital in the diagnosis department which consists of all female doctors. Shiho, who is more stubborn in her will to save other patients, sometimes come in conflicts with the other doctors there, but she cooperates with them to reveal a mysterious malady.

A blackmail arrives at Appi ski resort. “We demand 30,000,000 yen as consolation money for the destruction of the environment. If you do not respond to the demand, a time bomb set on the ski slope will be detonated.” If the bomb goes off, it will not only hurt the skiers but trigger an avalanche and cause a major catastrophe. The general manager of the ski pistes, Kurata (Ken Watanabe) pleads for an immediate shutdown of the ski site and reporting to the police, but the president of the ski resort gives priority to business interests and decides to negotiate with the blackmailer. And a negotiation process for a despicable ransom case with a massive hostage of all the skiers at the resort begins.

Ataru, who suffers from “savant syndrome,” has the power to discover, observe, see through, and deduct microscopic evidence of unsolved cases. Why does he always go to the criminal sites? What explains his strange behavior? Meanwhile, a mystery unfolds with Ataru and a woman named Madoka, who is a killer. The woman possesses the same extraordinary memory and deductive reasoning abilities as Ataru. Who is she?

From the 2011 drama, Utsukushi Rinjin, Nakama Yukie reprises the character Saki. This time round, as Saki Amihama, she will be targeting men. With the facade of an angel, she draws men to her, only to lead them to a destructive end. Like a moth to the flame... but where is the line drawn between the saint and the devil?

Ataru is a TBS series is about an autistic young man with a mysterious past who helps the police solve criminal cases. It stars Masahiro Nakai in the title role and has received 19.9% TV viewership ratings.