Nene is a mother who dotes on her only son, Dai. Dai is a spoiled young man who grew up to be a mama's boy. The naughty classmates don't like Dai's real-life lifestyle. One day, when he meets Dai's mother, Nene, his crotch throbs when he sees her big breasts. Masa, who is cunning, sets a trap for Dai to make it look like he is bullying Yuta. Nene lies to her mother, saying, "Dai bullies Yuta every day." Nene is shocked, but she has no choice but to listen to Masa in order to protect Dai, knowing that if the school or the media finds out, it will be a big problem. She has her big breasts fondled, is talked into having sex, and is even forced to have sex. The naughty kids' pranks escalate, and the busty mother is played with by the dick like a toy, and her pussy is covered in milk! Before she knows it, it's all down to her son's dick.