At the end of the Southern Song Dynasty, Xiaobai was forced by Fahai under the Leifeng Pagoda after saving Xu Xian. Xiaoqing was accidentally driven into a strange fantasy of Shura city by Fahai. In several crises, Xiaoqing was rescued by the mysterious masked youth. With the obsession of going out to rescue Xiaobai, Xiaoqing went through the calamity and growth, and together with the masked youth to find a way to leave.