Gu Cheng, the successor of Panlong Temple, was forcibly sent down the mountain by his master because the spiritual tide was about to rise and the people were in danger. He needed to find the Yin body to awaken the nine-character mantra. When he first entered the mortal world, he was dressed in rags and was humiliated by others, but he saved lives and healed the wounded and exposed hypocrisy with his Taoism. By chance, he meets Song Xiaoxiao, the most yin person, and gets involved in entanglements from all sides. He uses his golden eyes to distinguish evil spirits, and his silver needle to save the world. In the midst of prejudice and crisis, he embarks on the road of saving himself and saving others.