Shinji, the young president of a local factory that manufactures parts, is married to Nana, a clerk at the company, and lives a modest life. Shinji's apartment was under the watchful eye of those who watched him. One day, when he came home late at night as usual, Nanako was nowhere to be found. Shinji files a missing persons report with the police, and a suspicious package arrives. It contained the image of Kudo, whom Shinji had dismissed because of his poor attitude toward his duties, and his cronies, who had taken up with him and transformed Nanako into a lecher...