Mrs. Frisby, a widowed field mouse, faces an impossible dilemma: her sickly son, Timothy, cannot be moved from their winter home, but the farmer's plow is coming to destroy it. Desperate for a solution, she seeks help from a mysterious colony of super-intelligent rats who live under the rosebush. These rats, who escaped from a laboratory called NIMH, possess extraordinary skills and a secret plan that could save Mrs. Frisby's family and change their own destiny forever. This is a thrilling story about courage, intelligence, sacrifice, and what it truly means to be civilized.