Unable to bear her mother-in-law's harassment, Song Zhiwan signs an imperial-decreed divorce letter, takes back her own estate, and bravely breaks free from the oppressive cage of marriage. Facing gossip, her ex-husband's attempts to win her back, and social status barriers, she always maintains a clear and independent mind, relying on no one and living by her true heart. Childhood sweetheart Xiao Changfeng deeply loves Song Zhiwan, dares to defy worldly status prejudices, and is willing to guard her without official titles. The story conveys the power of women's self-awakening, not trapping oneself in a failed marriage while staying true to oneself, and also displays sincere and courageous emotions, exploring love and choices under identity prejudices.