The Secret of NIMH

"The Secret of NIMH," released in 1982, follows the story of a widowed mouse, Mrs. Brisby, who seeks the help of a group of intelligent rats living in a nearby rose bush to save her home and family. The rats have gained intelligence from experiments conducted on them at the National Institute of Mental Health (NIMH). The main conflict revolves around Mrs. Brisby's race against time to move her home before it's destroyed by the farmer's plow, uncovering the secrets of NIMH along the way.