The book tells about a full-time house-keeping mother who loves triathlon races as leisure activity, and she devotes herself in cooking in order to keep her family’s health in good condition. From the recorded images of her lunch boxes, people can know that she provides a reassuring, delicious and joyful mealtime for her family, and also creates a lifelong family memory. The story behind the lunch box is an enthusiastic heart that willing to share the cooking process along with the secret recipes. In addition, all the royalty income of the book is donated to the World Peace Organization, so that children whose families are not be able to support them can get enough nutrition to grow up healthily.