In a world where nonhumans eat humans if they so desire, Ineko Rizuna meets a fellow nonhuman named Kuroo Iza that, like herself, doesn't eat humans. He tells her about a place called the Peaceful Valley that used to be a center of peace between all sorts of nonhuman species, even... humans. Ineko immediately wishes she could restore the Peaceful Valley, but the problem lies there; she and Kuroo are just a couple of nonhumans in a world of greed. Can Ineko and Kuroo fight for the peace of the Peaceful Valley? Or will they die in the process?