Nangong Ran, the only princess of Fengyu Kingdom, was favored by thousands of people. Although she was engaged to Lin Heng, the eldest son of Dingyuan Houfu, she fell in love with the concubine Lin Mobei, a man with a withdrawn personality and even a slight sense of inferiority. By chance, the fate of the two was tightly tied together, and they began a different path of transformation.