"The Secret of NIMH" is an animated film released in 1982, based on the novel "Mrs. Frisby and the Rats of NIMH" by Robert C. O'Brien. The story follows Mrs. Brisby, a field mouse, who must save her family from a farmer's plow. To do this, she seeks help from a group of genetically modified rats that escaped from a laboratory known as NIMH. The film explores themes of courage, sacrifice, and the struggle for survival. As Mrs. Brisby learns about the rats' advanced intelligence and their challenges, she discovers the importance of community and the lengths one will go to protect loved ones.