Hoping to become a famous artist one day, Seymour Snail takes a job in a New York City art gallery, where everyone is buzzing about a "magnificent mystery artist.".
John can do nothing well until a snail gives him one hundred fabulous stories to tell. But even they wear thin and he goes in search of the snail again.
Langley the snail arrives at the store too late to buy the perfect Father's Day present for his dad, but on the return trip, he finds that the very best gifts are from the heart.
Mr. Snail tells a mouse his secret, and the mouse passes it on to the beetle who tells the turtle, and so on, until the secret gets back to Miss Snail.