This time the bad person was Zyuurou Motizuki,a retainer of a Shogun. Mochizuki made bad use of his position and was selling the illicit opium.And he had a a collaborator called "Kurayami Bugyou",Dark Magistrate. Shingo Yasukawa was a passionate man who became the police officer because his father was a police officer too.Shingo was killed by Dark Magistrate just as his father.
This time, the story was quite serious . It expressed the danger of drugs and shameless person who regarded the bad drugs as the seeds of money.