Shen Zhao knelt down and burned the urn. When he got up, the whole city knelt down and begged her for forgiveness. Seven years ago, she was sent to a mental hospital due to "mental disorder". Now when she returns, a box of ashes detonates the city's nerves. The funeral home incinerator Li Yan secretly guards her every move, the blind archivist Chen Zhihui spells out the truth with songs, and the confession of the richest man Yu Wanqiu turns out to be the beginning of a bigger conspiracy. When the whole city fell to their knees, she realized that the one who really deserved to be forgiven was herself who had believed in the light.