Nagatsuka was once on the road to success as an elite policeman, but he was demoted to remote jurisdiction after his boss screwed up and his wife wants to divorce him because of it. His life seemed to have met a dead end. He needed to plan a big come back in order to get back on the main stage as a policeman once gain.
On the other hand, Shimoyama, a detective who works as a spy for Nagatsuka, received a request from a woman. She wanted Shimoyama to help her find her father. Shimoyama manages to find the father, who had become a homeless guy named “Abe-san.” Nagatuka orders Shimoyama to fabricate a case for illegal gun possession and prepare someone who can be arrested for the case. So, Shimoyama tries to hire Abe-san to play this character…