When a rat realizes the mouse helping him is captured, he says, "Damn!" Today, this is a rather mild form of profanity, being heard on television and video games quite often. In the 1980s, it was unusual to hear it in something below PG, if that!

Co-producer Gary Goldman expected at least PG, due to violence and intense scenes. Not only was the G a surprise, many felt it hurt the film's chance to attract an older audience.

In this movie, a widowed field mouse must move her family, but one of her children is sick. Asking other creatures for help, she is advised to go to the rats. At first, they want nothing to do with her, but change their minds when they hear her name, Mrs. Brisby. Then they seem to feel almost obligated to help her.

Mrs. Brisby learns that her late husband helped the rats escape from a laboratory, which they call NIMH. This explains not only why they are willing to help, but also the rats' (and her husband's) intelligence and ability to read. She later overhears a farmer's wife mention the National Institute of Mental Health called, asking if there were any rats behaving oddly at the farm.

A mouse, several rats, a shrew, and a very clumsy crow work together to move the mouse's home before the farmer plows the field. They must work fast, dodge evil cats, avoid mud pits and watch out for mutiny to get the job done.

More Info: www.imdb.com