"Yuka", who is not satisfied with her child's grades, requests a special class from her homeroom teacher, "Shiho", but the true aim of "Yuka" was not to improve her child's schoolwork ... It comes from a disagreement with her husband. "Yuka" who hits stress against the new female teacher "Shiho", forces sexual activity and hunts down mentally ... However, "Shiho" was not just a woman who withdrew quietly ...