Gu Xiuyuan has been cultivating Taoism on Xuanxu Mountain for twenty years, but he has never been able to realize it clearly. In order to find his own Tao, he travels in the mortal world with Jiang Yichen, a wanderer in the world. In the secular world, they witnessed the beauty, ugliness, good and evil of human nature together. In such a world, can we successfully ask?