Shen Qingci, the legitimate daughter of the Shen family in Dajing, was framed in her past life by her half-sister and Concubine Liu, leading to the execution of the entire Shen family and the tragic death of her unborn child. Carrying overwhelming hatred, she is reborn three days before the tragedy occurs, accidentally activating the Family Guardian System. To protect her unborn daughter An'an, Shen Qingci unlocks skills in identifying poisons, gathering evidence, medical arts, and commerce, moving forward step by step. She directly exposes the abortion poison soup, resolves a crisis regarding her reputation, and forms an alliance with the God of War, Prince Dingbei Xiao Jue. Internally, she purges traitors within the Shen family, reclaims stewardship, and awakens her profligate eldest brother; externally, she opposes the court conspiracy of the Chancellor and Grand Commandant Murong Lie. The cute baby An'an is intelligent and spiritually perceptive, repeatedly helping her mother break the deadlock from a child's perspective.