Atsushi has admired his mother's friend, Sho, since he was a child. When she visits their home after a long time, he desperately tries to hide his joy. However, her kindness and care awaken a sexual desire in him that goes beyond simple romantic love. This deep-seated passion eventually moves Sho's heart, leading them to commit a one-night mistake. Unable to be satisfied with just once, Atsushi continues to pursue Sho, and they both surrender their bodies to the pleasure of their immoral affair. But since Sho is a married woman, their relationship cannot possibly last forever...
