Shinichi and Nana had always dreamed of settling down and living a peaceful life, and finally their long-awaited move to the suburbs became a reality. In a quiet residential neighborhood just removed from the bustle of the city, their new life began. Their move was assisted by Noda, a local neighborhood association officer. Touched by Noda's kindness, Shinichi felt deeply grateful and invited him over for dinner. That night, without knowing her husband's intentions, wife Nana would begin a new relationship with Noda, her husband's neighbor.