In a long-ago war, humankind set off a devastating ecological disaster. Thriving industrial societies have been swallowed up and the Earth is slowly submerging beneath the expanding Sea of Corruption, an enormous toxic forest filled with mutant fungi that release a miasma of poisonous spores into the air. Nausicaä, a compassionate young princess, and her allies battle to heal a wounded world and its inhabitants. The gentle, but strong-willed, princess has an empathetic bond with the Ohmus, the giant mutant insects, who open up their hearts to her. In her quest to create peace among empires fighting over the world's remaining precious natural resources, will Nausicaä be able to interpret the Ohmus' urgent warning about the southern forest? And what of the war that rages all around her?