Earth’s final city, Olympus, rises from the ashes of a global war, its society built upon a dual population of humans and Bioroids, artificial clones who constitute half of the city’s inhabitants. Guided by a powerful supercomputer, the remaining survivors enjoy a façade of peace. However, beneath this calm lies a plot: human terrorists within the military seek to reclaim power, sparking a clash with the government’s forces. The confrontation is led by the legendary soldier Deunan Knute and her partner, a 75 % machine.