In a postmodern world where good and evil are quantifiable and controlled, the pseudoscience of measuring and balancing good and evil has become the core of a layered society. The ministry known as Symmetry is responsible for balancing good and evil. Symmetry exists to ensure order and peace in Azure, the city above the clouds. Below, in the rusty entangled mess that is the Mire, chaos keeps its cogs and wheels turning. Ao and Lain, two youngsters from the chaotic slums of the Mire, catch the attention of the entity in control. They are now forced to reconcile the chaos they've grown accustomed to with a newfound life above the rules, rooted in balance and order.