Liu Cheng, a poor farmer's son, goes to the landlord to borrow money for his father's medicine, only to be brutally beaten. Just when all hope seems lost, he saves a squirrel and receives a celestial fruit in return. From then on, he can understand the language of all living things. Thus begins Liu Cheng's journey down a path no one has ever taken. Guided by his demon-beast companions, he discovers an ancient cultivation legacy and becomes the world's only Foundation Establishment cultivator. With no sect, no masters, and no one to guide him, this ordinary young man, dressed in humble clothes and accompanied by a squirrel and a leopard, must bear the weight of being the world's only cultivator.