Rin who feels loneliness by passing her husband.She used to work at a real estate agent, but one day trouble occurred at the apartment she introduced to a young man who lived alone.When she runs, the lights don't turn on.Moreover, it seems that the contractor can't come soon because it's moving season.As the sun goes down and it gets dark, the young man falls in love with Rin when he spends an awkward time alone with him.Then, a few days later, when she is called by her young man again due to gas trouble, a gap is created in Rin's heart...