Since her husband died in an accident, Yuka has been living with her son Jun alone. Thanks to her dedicated upbringing, Jun secured a job at a top-tier company and got married, supposedly living a happy life... or so it was supposed to be. Alice, the wife, hasn't done any housework since their marriage and spends her days out having fun. One day, when Yuka returned home, she found Alice hosting a drinking party with her boyfriend! Fed up, Yuka scolded Alice, but Alice held a grudge against Yuka and conspired with her boyfriend to hatch a plan...
