Ancient Crown Princess Song Yutang accidentally travels through time to the modern era, forced into a substitute marriage to bring good luck to Jiang Muyan, the eldest grandson of the richest family who is in a coma from a car accident. Her husband's parents are honest and timid, frequently bullied and mistreated by the family, with internal conflicts running deep. Song Yutang never backs down, staying true to her core principles, using courage and wisdom to straighten out the family style and set up rules, protecting the whole family. Under her guidance, her parents-in-law regain their backbone, the younger generation returns to the right path, and she also devotes herself to educational public welfare, helping students in difficulty. Jiang Muyan is actually feigning a coma, possesses mind-reading powers, silently sees through her character, and gradually feels moved. The two put aside their estrangement and join hands to overcome difficulties together.