Shougo Yahagi is a young motorcycle enthusiast living in a world of hot bikes, hard rock, and J-pop idols. The general populace go about their lives in peace, under the watchful eyes of a computer program in the guise of pop idol sensation Eve, unbeknownst to them. Shougo himself is mostly concerned with riding his motorcycle and picking up beautiful women like Yui Takanaka, who aspires to be a dancer. Shougo's life suddenly changes when his friend, Shinji Nakagawa, shows him a top-secret project: the "Garland," an advanced motorcycle that can transform into a robot. Ambushed by the military, Shougo hijacks the Garland and escapes into the city. Evading the military with the help of Yui and her friends, he gradually discovers that their idyllic society is only an illusion.
A young biker stumbles onto a prototype motorcycle with a hidden function that has a link to the true nature of his world.
The Dezalg have returned with a new, horrible weapon and unleashed it on Megazone 23's defenses. Believing their salvation is also in new weapons, B.D. is again bent on breaking the EVE's final protection level.Full control of Megazone 23 would mean unfettered weapons development. Shogo, meanwhile, has tried to return to a 'normal' life; Hanging out with his biker gang, "Trash" and his girlfriend, Yui. But, his convictions about the Megazone's shadow government policies haven't changed and when EVE calls for his help, he discovers where the Garland bike has been hidden. It's showdown time for Shogo and B.D., Trash and the military, as well as the Dezalg and Megazone. However, EVE's final secret, A.D.A.M., may mean no one will survive.
