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In the future, an organization called the GGP has taken control of the world. Rin Ogata was a promising up-and-coming ballet dancer, but suffered a serious injury while dancing and decided to quit. Years later in college, she comes across a club building and soon finds herself intrigued by a transforming motorcycle-like robotic vehicle called a "Rideback". She soon finds that her unique ballet skills with balance and finesse make her a born natural on a Rideback. However, those same skills also get her into serious trouble with the government.
Energy crisis, scarcity of resources, etc. Leads to its only logical conclusion: war between east and west.
The Zaku, "The Father of all Mobile Suits", a title bestowed on to this mobile suit long after its creation & deployment to the battlefield; but this is not the story of the Zaku's exploits during the Zeon War of Independence, later called the One Year War. Neither is it the story of a new type of piloted, independently powered mobile machine. A machine that would be powered by a state of the art thermonuclear reactor, but due to the secrecy and inherent danger involved in developing a project of this kind, its development was outsourced to Hosioka, a small steelworks industrial plant and its employees, this is their story.