Kanon is a married woman in her fourth year of marriage. One day, her husband asks her to take care of her injured uncle. She never liked her uncle, who always talked dirty, but since her husband was taking care of her, she couldn't refuse and ended up taking care of him. The next day, when she went to her uncle's house, she found no sign of any injury, but there was a perverted old man there, constantly making dirty jokes. Her uncle had lied about being Kanon and called her over, hoping to make her his own. Then, when he was left alone with Kanon, he immediately started sucking on her pink nipples...