Prime Minister Fujiwara (Toshio Chai) was attacked by a remotely controlled bomb.This unpredictable event is closely linked to the previous killings of congressmen, and people can't help but think of the historic events of 150 years ago, when Okubo Toshimichi and Ito Hirobumi were assassinated one after another.

However, the police could not even determine the real target of the murderer.On the other hand, Ukyo (Yutaka Mizutani) who rushed to the scene noticed from the traces on the scene that the terrorist operation may have used black market labor.His reasoning is accurate, and as the clues are followed, it gradually becomes clear that there is a character deeply involved behind the series of events.The police advanced the investigation along this clue, but Ukyo felt a little violated.

At the same time, Ukyo and Kaoru (Terawaki Yasufumi) visited the police station where Takada (Kato Kiyoshiro) worked. Takada asked them to accompany them to the crime scene. He hoped to learn Ukyo's investigative techniques personally.They re-verified the scene and discovered unexpected facts from the remaining blood stains.However, just after that, Kaoru and Takada, who were investigating separately, fell into a desperate situation.In addition, there are also unusual trends surrounding Tonegawa (Ogata Yoshihiro), who secretly controls the political world...

This incident will become a major case etched in the 150-year history of the Metropolitan Police Department.

What will be the fate of Kaoru and Takada who fall into a cunning trap?