Akemi (Reiko Sawamura) is a mother who single-handedly raised her son, Gaku, who is obedient and has excellent grades, and even bought a house. She was said to be an elite mother and child by her neighbors, and she had a happy family. Kenta, a bad boy, appears in front of the two. One day, Kenta seduces Gaku into stealing the underwear of his homeroom teacher, Furukawa (Hana Yoshida), then photographs it and threatens Akemi. To protect his son, he became Kenta's female pig.