The best Kentaro Sakaguchi’s movies of 2021

Story continues from the Japanese Signal drama series. In 2021, a limousine taxi driver causes an accident on a highway and a high-level government official dies in the accident. Cold case investigation team, including Kento Saegusa and team leader Misaki Sakurai, have doubts about the case. Meanwhile, in 2009, administrative officers die consecutively in car accidents. The police announce these deaths as accidents. Takeshi Ōyama believes that these deaths were not the product of simple accidents. At 11:23 pm, a walkie-talkie turns on and makes a connection between the future and past. Kento Saegusa and Takeshi Ōyama face the threat of bioterrorism.

Komari Sano's parents ran a small Tokyo factory that manufactured aircraft parts. With her parents' influence, Komari Sano dreamed of becoming a pilot. During World War II, her older brother died as a kamikaze pilot and her parents died during the bombing of Tokyo. Komari Sano became an orphan and lived with her aunt. Her aunt ran a ryotei (high end traditional restaurant). After the war, all aerial activities were initially banned in Japan. After long negotiations with the Supreme Commander of the Allied Powers, Sizuo Matsuki, who is the security chief of Civil Aviation Bureau, finally launched Japan's civil aviation. Komari Sano applies for the position of a cabin attendant.

The story begins shortly after the finale episode of the 2018 drama, and then moves to 2020, two years later.