When her family runs out of food, Xu Xiaoman unexpectedly travels through an ancestral grain cabinet to a modern TV production crew, trading genuine effort and diligence for food to bring back home. Modern producer Zhou He becomes her temporary caregiver, and on the show she learns to recognize vegetables, sort meals, and practice food conservation methods, while also helping her family and neighbors overcome hardships. Facing attempts by others to exploit her background and a food controversy, she insists on never selling stories, only teaching methods. Fifteen years later, an adult Xiaoman combines ancient public grain stove experiences with a modern cafeteria pilot, passes the evaluation to become the annual manager, and spreads food-saving regulations to both places.