While animals evolved intelligence and established prosperous cities and strict laws, humans degenerated back into primitive creatures that could only pronounce simple syllables and rely on instinct. Lin Yuan is the top "reverse animal trainer" in the animal world. His daily job is to use a resonance device to appease the irritable "workers" or to cage the wild and untamed "appreciation species". However, a group of savages who called themselves the "Awakened" broke the peace of the city - they no longer only attacked warehouses for food, but began to systematically destroy traffic signals and communication base stations, and left strange graffiti on the scene. Those graffiti are primitive human writings that are incomprehensible to all animal experts and have been completely forgotten by history. Lin Yuan was ordered to investigate, but step by step he came closer to a truth that could subvert the entire civilization of the beast world: these "savages" were not crazy beasts. They were trying to awaken a buried power - human beings' own language, tools, and the fire of civilization.
