Eleanor, a beautiful Head Maid who serves the Trois Family, does any job to perfection. But for some reason, she cannot connect with the opposite sex... Until one day, Prince Julius suddenly visits the mansion she works at!! On his way out, the prince entrusts her with a mysterious ring and told her, "Don't tell anyone. It's a secret between you and me." From that day on, a series of incidents turn the country upside down!! "I'm just a maid, what do you want me to do?!" This is a mystery-love story full of secrets.