Shougo Yahagi is a young motorcycle enthusiast living in a world defined by hot bikes, hard rock, and J-pop idols. The general populace goes about their lives in peace, under the watchful eye of a computer program disguised as the pop idol sensation Eve, though they are unaware of this. Shougo is mostly concerned with riding his motorcycle and picking up beautiful women like Yui Takanaka, who aspires to be a dancer. Shougo's life changes suddenly 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.