Nausicaa of the Valley of the Wind

It's been 1,000 years since industrialized civilization ended in the "Seven Days of Fire." A toxic jungle has taken over where giant bugs rule, especially the fierce beetle-like ohmu. Humans live in smaller cities and villages now and travel via airship and glider over the jungles. Princess Nausicaa's village is in a valley along the ocean with a steady breeze to keep out the noxious gasses of the jungle. It's almost idyllic, until airships from Tolmekia invade, insisting that "uniting" all peoples and then destroying the toxic jungle is the only way for humans to survive. Nausicaa, who has come to understand the ways of the insects and discovers a secret beneath the jungle, tries to make the Tolkemians understand their folly before it's too late for her village and all of humanity.