Bian Yue'er was originally the eldest princess of Bian State who was favored by thousands of people. When the country was destroyed, she lived among the people. Fortunately, she was rescued by Liu Sisi, the madam of Feng Yue Tower in the capital, and raised her as a child. She has the true biography of the four famous courtesans and is proficient in music, chess, calligraphy and painting. After suffering the betrayal of her lover, Bian Yue'er became despairing and became a prostitute, changing her name to Yue Yan.
The sound of nature captivates all sentient beings, and no one knows the name of Yue Yan. Because of her excellent guqin and stunning appearance, she soon became the number one in Fengyue Tower.
She was naturally stubborn and refused to give in to the powerful. She offended high-ranking officials, and the four famous prostitutes and her adoptive mother were brutally murdered to save her life. With hatred for the country's subjugation, betrayal, and annihilation of her family, she resolutely shouldered the burden of Fengyue Tower and embarked on the road of revenge...