Yui Higashiyama (Yuriko Yoshitaka) works as a director at WEB Production Company. Due to her workaholic father and bad experiences in the past, she loathes working overtime. Even 2 years ago, she broke off her engagement to Kotaro Taneda (Osamu Mukai) because he was a workaholic. At her job, Yui always leaves at the end of the regular working day and never works overtime. Her peaceful days begin to change after a new department head arrives at work.