Eccentric socialite Gertrude 'Trudy' Lintz (Rene Russo) has four youngsters. She has their clothes tailor-made, teaches them table manners, to play croquet and to say their prayers before bedtime. But these are no ordinary youngsters - they're chimpanzees! 'Buddy' tells the true story of Trudy, who with her husband Bill (Robbie Coltrane) and her loyal assistant Dick (Alan Cumming), is the most generous animal keeper since Noah! But her favourite 'child' is Buddy, the gorilla she raised from a sickly baby to a mischievous adult who gets into all kinds of hilarious monkey business.