In a magical and vibrant tropical forest, a little fairy named Crysta discovers that her home, a place full of life and color, is in grave danger. The expansion of industrialization threatens to devastate her world of natural beauty and its inhabitants. Desperate to save her home, Crysta embarks on an adventure that leads her to meet a human named Zak, who accidentally wanders into the forest after being downsized by the magical dust she uses.
Together, Crysta and Zak form an unexpected duo in their fight against the evil spirit of destruction, Hexxus, who feeds off pollution and desolation. As Crysta shows Zak how wonderful nature is, he begins to understand the importance of protecting it and becomes a key ally in the battle to save FernGully.
Through vibrant animations and endearing characters like the wise and resourceful bird Batty and the adorable community of forest creatures, the story addresses themes of ecology and environmental awareness in an entertaining and charming way. Zak realizes that he is not only fighting for the future of FernGully but also for his own sense of connection with nature. Amidst exciting adventures and touching moments, it becomes clear that every small act can make a significant difference in preserving the natural world.