Ferngully: The Last Rainforest

A cute little sprite named Crysta lives in a beautiful tropical rainforest. One day she flies above the forest's dense foliage to glimpse the outside world, and while there, she becomes infatuated with a human named Zak. He's a nice enough fellow, but he also happens to be a workman on the logging machine that threatens to destroy the lush and magical forest. Crysta decides to shrink young Zak down to her size so that he can see the world he is about to demolish from a different point of view.