In the 1930s, in old Shanghai. Gu Manzhen (played by Ruby Lin) is elegant and quiet. She takes care of her mother at home and works independently outside. Her love with her colleague Shen Shijun (played by Patrick Tam) has just sprouted. Manzhen has an older sister, Manlu (played by Jiang Qinqin), who became a dancer at the age of 17 to support her family. Later, she reluctantly gave up her first love and married Zhu Hongcai, who was rich and powerful and could make her family live a rich life. Zhu Hongcai was not a man who lived a peaceful life. After marriage, he still spent money on wine and women. Manlu was old and no longer beautiful, and her mentality became strange. Manzhen and Shijun's love did not go smoothly. Although they were sure of each other's feelings, they were opposed by Shijun's mother. She hoped that her son would marry Cuizhi, a famous socialite in Nanjing. But she didn't know that Cuizhi actually loved someone else in her heart. Manzhen and Shijun suffered a lot, and with constant temptations, misunderstandings between the two gradually arose. In order to keep her husband's heart, Manlu came up with a vicious method, even at the cost of her sister's lifelong happiness.