Tsubasa moved into an apartment with her husband and son, but over the years her relationship with her husband grew distant, and eventually her son moved out, leaving her with nothing to do and feeling lonely. One day, she noticed her neighbor repeatedly leaving garbage in the shared hallway and decided to confront him by ringing his doorbell. Invited inside to talk, Tsubasa was overwhelmed by the messy room and strange odor, which stirred unexpected emotions within her, drawing her into an unusual and intense encounter.