She has served the troublesome youngest daughter of a prestigious count’s household for over four years. One day, the heir of the family returns and assigns her to oversee the lady’s studies then makes an unexpected proposal: become his “punishment maid” for three months. The offer includes a second salary, enough for her to finally reach the secret goal she's been quietly pursuing, so she accepts. But the moment he orders her to brace herself by the fireplace, she realizes too late she has stepped straight into his trap.