The fierce battle between evil monsters and magical girls continues today. One of the conditions for being a magical girl is to remain a virgin. Losing her virginity means permanently losing her powers. Rinse Bell, a slutty magical girl who taunts and provokes adults, wields powerful powers and easily defeats evil combatants. However, she is caught by an evil monster due to a moment of carelessness. She is placed in a machine in the evil monster's hideout: the "Fully Automatic Teaching Machine". It applies the principle of Pavlov's dog, thoroughly teaching anyone who enters it—a machine that must be put down. Will Rinse Bell be able to maintain her sanity after being held captive and constantly stimulated for several days? And what will become of her virginity?