Human civilization collapsed due to the "Seven Days of Fire" war. Thousands of years later, the desolate land was covered by a fungus forest that released toxic miasma - the "Sea of Corruption". It was a place where gas masks were required to enter. , otherwise the forest would kill you from lung rot in just five minutes. There are many huge insects living in the Sea of Corruption. As long as humans want to burn the trees in the Sea of Corruption to drive away the insects, or if they want to kill any insect, the "King Insect", the king of insects in the Sea of Corruption, will attack. So humans live a life of fear of the sea of rot and swarms of insects. On the shore of the Acid Lake, there is a border country called "Nausicaa of the Wind" that is not affected by the poison of the Sea of Corruption due to the sea breeze. Nausicaä, the princess of the Valley of the Wind, governs the country in place of her father Kil, who was poisoned by the Sea of Corruption. Nausicaa has magical powers. She can freely enter and leave the sea of decay that people fear, and she can also make fox squirrels who are always reluctant to approach humans be willing to approach her. One night, Domekia's large transport ship crashed into the Nausicaa of the Wind. Nausicaa rescues Rasdelle, the princess of Paget City, who is being held captive on a ship. After Rastelle ordered Nausicaa to throw the cargo off the ship, she passed away──About the author Hayao Miyazaki's original work, script, and supervision were all served by Hayao Miyazaki. It was originally a comic work of supervision, and was later adapted into a first feature-length novel. Animated films, which constantly used the latest technology at the time, were also representative works of Studio Ghibli in its heyday. Many of the staff who participated in the production are now among the best in the industry, and it is a fantasy classic like a textbook in the Japanese animation industry.
人類文明因「火之七日」這場戰爭而崩毀，經過了千年之後，荒蕪的大地被釋放有毒瘴氣的菌類森林──「腐海」所覆蓋，那是一座必須戴著防毒面具進入，否則只要五分鐘就會因肺腐爛而身亡的森林。
腐海裡住著許多巨大的昆蟲，只要人類想燒了腐海裡的樹木驅蟲，或想殺害任何一隻蟲子，腐海的群蟲之王「王蟲」便會展開攻擊。於是人類過著畏懼腐海、蟲群的生活。
酸之湖的畔有一座因海風吹襲而不受腐海之毒影響的邊境之國「風之谷」。風之谷的公主娜烏西卡，替身受腐海之毒的父親基爾治理國家。娜烏西卡具有神奇的力量，能自由進出人們所畏懼的腐海，也可以讓一向不願意靠近人類的狐松鼠願意接近她。
某夜，多美奇亞的大型運輸船墜落風之谷。娜烏西卡救出被俘虜於船上的培吉特市的公主拉絲黛兒。拉絲黛兒囑咐娜烏西卡掉船上的貨物後，便撒手人寰──