A hundred years ago, the Jade Beast Immortal Master sealed off the exotic beasts in the Eight Provinces, and the southwestern divine wood turned into a withered tree (transformed into a spiritual source). In the forty years of the Zhao Dynasty, the evil cult Gu Niantong, who had passed away, wanted to break the seal of the Immortal Master, refine and sacrifice divine trees to transform into tree demons, and poison all living beings. For this reason, the late emperor specially ordered Tang Lingfeng, the hidden supervisor of the Demon Control Bureau, and others to lead troops to the southwest to quell demons and demons. Conquering the tree demon requires the creation of a mechanism giant beast by the public input family, and the method to drive the giant beast is recorded in the Complete Book of Lu BanThe 'Lingyuan Secret Technique' has also been implicated in the blood feud and enmity between the Tang family, the public transmission family, and the Demon Control Department over a decade ago. Decades ago, the public transmission family slaughtered the entire Tang family in order to obtain the 'Complete Book of Lu Ban', and luckily survived for only eight yearsTang Lingfeng, who was at the age of, was brought back to be raised by Zhang Qian, the commander of the Demon Control Bureau. Tang Lingfeng met the siblings of Lu Yin and Lu Tong here, and they were as close as siblings. They passed strict assessments together and became members of the hidden prisonTang Lingfeng's background was revealed, and the relationship between Tang Lingfeng and his siblings, Lu Yin and Lu Tong, changed. The three of them also quietly fell into the conspiracy of the public losers.