A guesthouse located in the summer resort town of Karuizawa usually takes family reservations, but it has a unique policy allowing bookings exclusively for single men. The owner is a 52-year-old woman who, despite her age, appears remarkably charming and youthful, making this a popular destination with many repeat guests. In reality, when she finds a man she likes, she reveals an unexpectedly sensual and alluring side, captivating men with her irresistible presence.