The GGP has seized global power in the future. Formerly a budding ballerina, Rin Ogata had to abandon her aspirations after injuring herself while performing. During her college days, she discovers a club facility and becomes fascinated by a "Rideback," a motorbike that can transform into a robot. Her inherent skill in balance and grace from ballet makes her a natural on the Rideback, but it draws the attention of the government and involves her in dire straits.