Early one morning, the protagonist Koichi finds a man collapsed at his front door. It was his only son Ryoji, who had been out of touch for the past 5 years. His wife Akiko worries about their son’s health, but Koichi curses him as a "loser." Koichi is disappointed with his son, who didn’t go to university or find a job with a big company, and has come home in an emaciated state. Then, Koichi is summoned to a company-wide emergency meeting at work.