"Let's follow the school rules" is a trivial topic now, but when it comes to breaking the school rules, I actually followed them a lot. That's when I met that female teacher. Haruki-sensei is young, beautiful, and has an incredible figure. Haruki-sensei is the wife of the chairman of the board of directors, and is in charge of maintaining discipline within the school. She is always very strict, but with her strange charisma and tsundere teaching style, she rehabilitates the bad students one after another. But one day, some disgruntled students kidnapped Haruki-sensei...