日本のコミック界を代表する鬼才・大友克洋が自らの長編大作漫画を劇場アニメ化。近未来の都市を舞台に、謎の存在“アキラ”を巡って、不良少年たちやアーミー、ゲリラ、宗教団体まで入り組んでの抗争や駆け引きを細かな描写で壮大に描く。２００２年、「デジタル・サウンド・リニューアル版」としてリバイバル上映。
１９８８年、関東地区に新型爆弾が使用され、第３次世界大戦が勃発した――。２０１９年、ネオ東京。金田をリーダーとするバイクの一団は進入禁止の高速道を疾走していた。しかし、先頭にいた島鉄雄は突然視界に入った奇妙な小男をよけきれずに転倒、負傷する。小男と鉄雄は直ちに現れたアーミーのヘリに収容され飛び去ってしまった。翌日、鉄雄を捜す金田は、少女ケイと出会う。彼女は反政府ゲリラの一員で“アキラ”という存在を追っていた。その頃、鉄雄はアーミーのラボで強力なクスリを連続投与され、不思議な力を覚醒し始めていた…。
Japan, 1988. An explosion caused by a young boy with psychic powers tears through the city of Tokyo and ignites the fuse that leads to World War III. In order to prevent any further destruction, he is captured and taken into custody, never to be heard from again. Now, in the year 2019, a restored version of the city known as Neo-Tokyo—an area rife with gang violence and terrorism against the current government—stands in its place. Here, Shoutarou Kaneda leads "the Capsules," a group of misfits known for riding large, custom motorcycles and being in constant conflict with their rivals "the Clowns."
During one of these battles, Shoutarou's best friend Tetsuo Shima is caught up in an accident with an esper who finds himself in the streets of Tokyo after escaping confinement from a government institution. Through this encounter, Tetsuo begins to develop his own mysterious abilities, as the government seeks to quarantine this latest psychic in a desperate attempt to prevent him from unleashing the destructive power that could once again bring the city to its knees.
