This book is about the excitement that Lai-Lai and Chub-Chub's experience during their adventure of a new baby arriving home from the hospital. They joyfully assist in getting the nursery ready, as well as helping Momma get ready to take care of the baby. Lai-Lai and Chub-Chub discover their new youngest sibling is a baby girl.

Each child within the family is especially eager to come up with a new name for their baby sister. They love sharing these adventures together, and they are always full of joy at the end of the story.