1988: It is World War III. Tokyo is decimated by a mysterious black explosion, unmatched in magnitude.
2019: Fast forward 31 years. Neo-Tokyo, hastily built on the ruins of old Tokyo, is a sprawling cityscape of neon extravaganza. It is a fusion of towering skyscrapers and cutting-edge technology that is permeated through and through with an explosive, hyper-violent cocktail of biker gangs, poverty, and revolutionaries. In this derelict metropolis live Tetsuo Shima and Shoutarou Kaneda, two bikers who are the best of friends and the fiercest of rivals, despite being affiliated with the same gang. Desperate to prove himself as Kaneda's equal, Tetsuo unwittingly pulls a stunt that culminates in the awakening of a cryptic existence that threatens to change both the face of Neo Tokyo and the lives of those who call the city their home—the awakening of a government secret simply known as Akira.