Hayao Miyazaki's Nausica of the Valley of the Wind, based on his own manga, was released in 1984 and has been a cult classic ever since. In a long-ago war, humankind set off a devastating ecological disaster. The earth is slowly submerging beneath the expanding Sea of Decay, an enormous toxic forest that creates mutant insects and poisonous spores. Beyond the sea lies the Valley of the Wind, a kingdom of barely 500 citizens and home to Nausica , who risks everything to save her people and bring peace and health to the valley.
