Kohei Matsushita plays "Kohei Matsushita" himself, who is an undercover investigator of the Metropolitan Police Department. In order to investigate a big actor in the entertainment industry (a cadre of an international criminal organization), he enters the entertainment industry as an undercover agent, and conducts investigations while engaging in performing activities. In order to lurk, he must hide himself, so "he must not become popular", and he has spent 15 years quietly trying not to attract attention. In recent years, he has suddenly become popular and has become famous throughout the country. In this way, it is difficult for him to carry out secret operations. However, at this moment, an unexpected opportunity arises-he is going to act in a movie with that big actor! The search has reached a critical moment, and his identity is almost exposed...