Mrs. Frisby, a widowed mouse with four small children, is faced with a terrible problem. She must move her family to their summer quarters immediately, or face almost certain death. But her youngest son, Timothy, lies ill with pneumonia and must not be moved. Fortunately, she encounters the rats of NIMH, an extraordinary breed of highly intelligent creatures, who come up with a brilliant solution to her dilemma. And Mrs. Frisby in turn renders them...

Willard has been picked on and pushed around his whole life and is a twentysomething man who still lives at home with his nagging mother. He works at a shipping company for a stern, authoritarian supervisor. When Willard becomes fascinated with a hidden nest of rats living in his decrepit home, they become both his friends and his aggressors. He sics them upon anyone who crosses his path. But one rat, Ben, isn't so amenable to Willard's orders, and...

Rat and Duck run a bookshop and work to find the right book for each of their customers.

Wilfred the rat stumbles into a museum, where he befriends the animals living there and enjoys the many exhibits.

Timothy Frisby, a field mouse, teams up with the adventurous young rat Racso as together they try to prevent the destruction of a secret community of rats that can read and write.

Missy wants to take home the class pets, but another girl, Tiffany, has already asked their teacher so Missy and her friend Oscar need to come up with a plan to make Tiffany change her mind.

Pinch is a pack rat who does not want to give up the possessions that are cluttering his house, but when he finally is persuaded to sell them at a neighborhood tag sale, he discovers the beauty of recycling. Includes tips on "reducing, reusing, and recycling."

A very bad rat rides his horse along the highway stealing travelers' food, from a rabbit's clover to a spider's flies, until clever Duck introduces him to her "sister."

Rat brothers Louie and Ralphie Ratso try to prove they can be as rough and tough as their father in the Big City, but every time they try to show how tough they are, they end up accidentally doing good deeds instead.