A widowed field mouse must move her family -- including an ailing son -- to escape a farmer's plow. Aided by a crow and a pack of superintelligent, escaped lab rats, the brave mother struggles to transplant her home to firmer ground.
The Secret of NIMH is a 1982 American animated fantasy adventure film directed by Don Bluth in his directorial debut and based on Robert C. O'Brien's children's novel, Mrs. Frisby and the Rats of NIMH. Featuring an ensemble cast consisting of Elizabeth Hartman in her final film role as its protagonist, Mrs. Brisby, with Peter Strauss, Arthur Malet, Dom DeLuise, John Carradine, Derek Jacobi, Hermione Baddeley and Paul Shenar in supporting roles, the film was produced by Bluth's production company, Don Bluth Productions in association with Aurora Productions.