Kokone has been spending some time at her husband's parents' house to take care of her father-in-law. However, she is fed up with her father-in-law who keeps asking her to provide obscene care. One night, while masturbating, Kokone is seen by her father-in-law and forced into a relationship. Kokone initially resists, but as she surrenders to her father-in-law's caresses, her body begins to heat up, and she eventually begins to seek out her father-in-law's cock...