Aqi, the daughter of the prime minister of Yan State, was framed by the third prince Helian Chen and had her heart dug out to kill her. After Aqi died, her body was thrown into the lake, but strangely, Aqi did not die. When she opened her eyes again, she found that her appearance and identity had become Leng Li, the daughter of Leng Shao, a general of Yan State. Before Aqi, who had become Leng Li, came to her senses, she was married to the mansion of Helian Xuan, the fifth prince of Yan State. Although Helian Xuan looked a little honest and straightforward, he was loyal and kind, and was gentle and considerate to Leng Li. During the days of getting along with Helian Xuan day and night, Leng Li gradually fell in love with this "silly prince". The lives of Leng Li and Helian Xuan were rippled by sudden changes again and again. The two could only face difficulties and dangers together. Sharing joys and sorrows again and again made their hearts closer, but Leng Li also discovered the unknown side behind Helian Xuan, and the two had to part ways. While Helian Xuan is obsessed with Leng Li, Helian Chen uses shady tricks to get rid of Helian Xuan, his rival for power. At the critical moment, Leng Li comes forward to rescue Helian Xuan. After they reconcile, they decide to fight against Helian Chen and Concubine Liu behind him. Leng Li vows to avenge Aqi and help Helian Xuan ascend the throne of Yan State for the sake of the grievances of the past life and the love of this life.