Seiko divorced and raised her son Haruhiko single-handedly.One day, Seiko is sentenced to be dismissed from the company she has been contracted with for many years.Seiko is alone in her thoughts, but Haruhiko asks her if something is wrong with her...Seiko decides to ask Sugiura, his former boss, that he can't keep mourning for his beloved son forever.Despite the rough seas of the world, he was finally able to get a job offer, but the working environment at the company was far worse than Seiko could have imagined.