Following World War V, a global-scale conflict fought with non-nuclear weapons that almost halved the earth's population, Olympus, he utopian metropolis, is governed by Gaia, a vast artificial intelligence, and administered by genetically engineered humanoids known as bioroids. However, Olympus seems like a peaceful city on the surface; racial (human vs. bioroids vs. cyborgs), religious, and political conflicts lurk underneath, ...