One hundred years in the future, Japan has fallen to fierce invaders wielding advanced weapons, and the country is barely holding on. When her father is assassinated, sixteen-year-old high school student Shoko Ozora steps into the role of President of New Japan and climbs into her Liberator mech, Kamui, to fight back. Her campaign to free her people and restore the nation she inherited is a personal war launched from the cockpit of a machine she is still learning to control.