Mary and her husband have been married for a long time, because the age difference between the two is quite large, so the health of the husband is not good. Mary is at the age of desire to rise, but her husband is immutable, the couple has not made love to each other for a long time. Today Takuya, her husband's grandson on business trips to visit her uncle. For a long time, Takuya was still fascinated by Mary's beauty. Because she has not rented a hotel, Mary's husband wants Takuya to stay in their homes. The next day, when he accidentally witnessed Mary's changes, Takuya's horny attack was emerged. When Mary got out of the house, he went into her room and used his underwear to masturbate! When Mary suddenly returned, Takuya hurriedly stole his underwear to his room. Mary discovered that he had lost his underwear, so he guessed what happened. But she was not angry with him, on the contrary, she had found the object of helping the sexual desire that had been restrained for many years ...