Three years have passed since she married her husband Kazunori, and Mei has begun living with her father-in-law, who had been living alone. She had hoped to have children and live happily with three generations, but reality was not so sweet. Enduring a sexless marriage with her husband and sexual harassment from her father-in-law, Mei had no choice but to masturbate in secret. However, her father-in-law sees her masturbating and persistently comes on to her. Although Mei gently refuses, her father-in-law's sticky, lewd caresses soon turn into pleasure...