When a sprite named Crysta shrinks a human boy, Zak, down to her size, he vows to help the magical fairy folk stop a greedy logging company from destroying their home: the pristine rainforest known as FernGully. Zak and his new friends fight to defend FernGully from lumberjacks — and the vengeful spirit they accidentally unleash after chopping down a magic tree.
FernGully: The Last Rainforest is a 1992 animated musical fantasy film directed by Bill Kroyer in his feature directorial debut. Scripted by Jim Cox and adapted from the "FernGully" stories by Diana Young, the film is an Australian and American venture produced by Kroyer Films, Inc., Youngheart Productions, FAI Films, and distributed by 20th Century Fox. It stars the voices of Tim Curry, Samantha Mathis, Christian Slater, Jonathan Ward, Robin Williams, and Grace Zabriskie.