In her past life, Nangong Yan, the legitimate daughter of a military general's household, was forced to drink poisoned wine and left to die in the wilderness by the Prince Regent Xiao Lingyuan, while her eldest brother was murdered and her entire family was falsely accused. After being reborn, she used a hidden ailment to decline marriage and stay away from Xiao Lingyuan. Xiao Lingyuan insisted on marrying Su Yingxue, but after Nangong Yan was conferred the title of princess and found a good husband, he regretted it deeply and constantly pestered her. Out of love turning to hatred, Su Yingxue plotted and poisoned him, causing Xiao Lingyuan to lose his lineage, ruin his reputation, and ultimately commit suicide. Xiao Lingyuan lost his power and was demoted, filled with lifelong regret. Meanwhile, Nangong Yan lived happily with the martial arts champion Li Chengyun, raised a daughter, and lived in peace, completely bidding farewell to the bloody grievances of her past life to welcome a fulfilling life.