Synopsis

The drama is a police entertainment series that centers on a “mysterious man” who draws out the hidden potential of struggling young detectives. At Ikebukuro West Police Station, Section Chief Masuyama Hitomi has risen to the ranks of female management at a young age, yet finds herself constantly undermined by older subordinates who look down on her and thrown off balance by carefree juniors. an unusual order arrives announcing a new transfer from the Personnel Division Section 2. The newcomer is Mukai Kotaro, a plain-looking 55-year-old man. Does he have any real experience as a detective? Why has he suddenly been assigned to the Criminal Investigation Division? No matter what questions are asked, he brushes them off, while glimpses of his sharp detective instincts only deepen the mystery.

Soon after, a murder takes place in a private home, but due to a misjudgment on Hitomi’s part, a key suspect slips through their grasp. Deeply shaken, Hitomi lashes out at Mukai, suspecting that he was sent to evaluate her suitability in her role. In response, Mukai offers her a single, unexpected piece of advice…