Modern emergency doctor Gu Wantang accidentally crosses into a book, becoming the step-mother to seven children. Facing the originally written tragic destiny, she uses her medical skills, wisdom, and patience to set rules, accompanying the children to treat illnesses, learn characters, investigate their backgrounds, and learn to distinguish between true and false. The seven children also transition from guard to trust, finding the meaning of home in mutual protection. Gu Wantang insists on using evidence and kindness to resolve misunderstandings, leading the family to guard the grain route and help the common people, ultimately allowing the children to showcase their respective strengths and walk onto a path of goodness, jointly rewriting fate into a warm and powerful future.