When Vicki Myron finds a young kitten abandoned in the Spencer Library return box, she nurses him back to health, deciding then and there that he will be their library cat, and naming him, appropriately, Dewey Readmore Books. Dewey loves his new home, but once he discovers the littlest library visitors - who like to chase him, pull his tail, and squeeze him extra tight - Dewey begins to wonder if he's truly cut out for the demands of his new job. But, in the end, Dewey realises that helping people big and small is what he is meant to do, and that by sharing his special brand of Dewey love, he can be the best library cat of all.