It's been three years since she got married. She looks forward to the addition of a new member to her family. Even though she is in a situation that could be called the peak of happiness, Airi's Kokoro is still not at peace. She is plagued by the relentless sexual harassment of her father-in-law who lives with her, and her husband, who she relies on, is not willing to Airi , and they haven't had sex in a while because he is busy with work... Airi is isolated and helpless in her home. Her frustration grows day by day. Her father-in-law's sexual harassment escalates. Airi is cornered and weakened, and finally the dark desires of her old man bare their fangs.