Koichiro Iwase was working in the sales department of a large home electronics company, when he was retrenched due to a company restructuring. With an outstanding mortgage and a young wife, he needs to continue working for another ten more years before he can even think of retiring. While taking a taxi ride, he pours out his story to the driver, who in turns recommends him to try for a job at the Private Investigators firm "Playboys Detective Agency" which is owned by a former police detective, Genroku Tsuchiya. Within this firm, all of its members are above 55 years old, and they come from all walks of life.The firm consists of former stockbroker and Olympic champion Toraji Yui, former delivery man turned taxi driver Kaname Taura, and former general practitioner Tamotsu Horikiri. This bunch of old men are managed by the only woman in the company, Miyuki Isogai, who is known for her sharp tongue. Together, they resolve their clients' cases one by one.
