In 16th century Korea, noble lady Huang Zhenyi (Song Hye-kyo) is beautiful, young and knowledgeable. The unguessed companion and servant "slave" (Liu Zhitai) is deeply in love with Zhenyi, but his humble identity makes him betray the secret of Zhenyi's life experience. After learning the secret of her birth, Huang Zhenyi took off the dress of the aristocratic lady. Zhenyi took the "slave" as his first man, walked into the fireworks Lane "Qingqiao Square", and he also left alone. From then on, Huang Zhenyi became a prostitute Mingyue, and anyone with money could hold her in her arms, but no one was conquered by her intelligence and beauty, and the famous prostitute Mingyue became the object of admiration for men of both aristocrats and untouchables. Later, when the "slave" appeared again, what choice did Huang Zhenyi need to make?