The executive director of the «Chuo Shoji» company, Hidaka Shiro, is called a "demon of work", but the hostess of the bar calls him "the loneliest person in Japan." He lost his wife ten years ago and has been living as a widower ever since. He plotted to marry off his 22-year-old daughter Keiko for political gain, but Keiko is in love with Okuda, who is her father's subordinate. A story full of sadness and joy, depicting a man gripped by different thoughts, as an employee of the company and a father.