Eager to support her husband's transfer to Tokyo, devoted wife Oshima Yuka arrives ahead of schedule to search for a new home. Amid the city's hustle and bustle, she stumbles upon an empty house and meets Eriko Miura, a property-owning landlady. Initially reluctant to rent it out, Eriko finds herself unexpectedly drawn to Yuka's innocent charm and quickly changes her mind. Grateful and unsuspecting, Yuka embraces the kindness shown to her, and by nightfall, an intense new relationship begins. In the quiet solitude of the vacant urban house, desire blooms at the crossroads of loyalty to her husband and a sudden, passionate attraction.