Told in verse, a mother and her son exchange messages about how much they love each other. Cleverly fashioned with a picture of the earth in the middle, the book is two stories in one. It is reversible from each cover, each story ending in the center with the picture of the world. When the boy asks his mother "Just how much do you love me?" she replies in terms of the highest flying bird, the prettiest flower, "and so forth. He whispers in reply "I love you more!" and next we see the whole wide world. The reader then flips the book over and reads the story from the boy's point of view with the mom asking him the "how much do you love me?" question. His answers include comparisons to quiet caterpillars, frog leaps, biggest bubbles, freest kites, long-lasting lollipops, loud rocket ships, and "so much more than you have ever known."