About The Secret of NIMH
Mrs. Brisby, a shy and timid field mouse, lives in a cinder block with her children on the Fitzgibbons' farm. She is preparing to move her family out of the field they live in as plowing time approaches; however, her son Timothy has fallen ill. She visits Mr. Ages, another mouse and old friend of her late husband, who provides her with some medicine from his laboratory. Mr. Ages warns her that Timothy cannot go outside for at least three weeks or he will die. On her way back home she encounters Jeremy, a clumsy but compassionate crow.
The next day spring plowing begins, and though Mrs. Brisby is able to stop the tractor, she knows she must come up with another plan. With the help of Jeremy she visits the Great Owl, a wise creature living in the nearby woods, to ask for help. He tells her to visit a mysterious group of rats who live beneath a rose bush on the farm and ask for Nicodemus.