Signal

Saegusa Kento witnessed a mysterious woman abducting his female childhood friend who was later found murdered. The case remained unsolved for 15 years, nearing its statute of limitations.

One day, he hears a voice through a radio that was meant to be discarded. The voice belongs to a detective investigating the same case, sharing crucial information. As they continue communicating, Kento realizes that the person on the other end is living in the past. Together, across time, they work to solve this cold case.

This unpredictable human suspense drama weaves together a strong desire for justice that transcends time, along with complex human relationships.

The special begins shortly after the end of the 2018 drama, and then moves two years later, into 2020.

Story continues from the “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 (Kentaro Sakaguchi) and team leader Misaki Sakurai (Michiko Kichise), have doubts about the case.

Meanwhile, in 2009, administrative officers die consecutively in car accidents. The police announce these deaths as accidents. Takeshi Ooyama (Kazuki Kitamura) 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 Ooyama face the threat of bioterrorism.