Shortly after their wedding, Madoka begins living with her husband in their newly purchased home. One morning, after seeing her husband off to work, she receives an unexpected visit. The guests are her husband's senior and an unfamiliar man. The stranger declares, "I need you to take care of me for a while," and moves into the house as a permanent guest. From that moment on, Madoka is forced to confront this new presence, which brings a disturbing shift to her once peaceful married life.