The protagonist of the story, Bill, is a disabled person who suffers from congenital cerebral palsy, but Bill is not reconciled to being a loser. He hopes to succeed in life through his own efforts. Since 1955, he began to try to be a door-to-door salesman. at first, he hit a brick wall everywhere and was often looked down upon by "normal people". However, he was not discouraged and continued his career.