Xu Qingzhou was raised since childhood by five masters on Qingwu Mountain. After being "driven" down the mountain, he joined the demon-suppressing office as a beast-taming servant, repeatedly solving bizarre cases thanks to his talent for understanding the language of all beasts. As the mysteries unraveled layer by layer, he discovered that his five masters turned out to be the five divine beasts guarding the Heavenly Ruins for a millennium, while he himself was the spirit-controller shouldering a mission. Faced with the crisis of the Heavenly Ruins' seals loosening and ancient fierce beasts about to emerge, he joined hands with his partners to forge a pact to reseal the Heavenly Ruins, ultimately finding his own destination and sense of responsibility between the warmth of mortal life and the protection of his sect.