Delivery boy Jiang Linyuan accidentally downloaded the "Past Life Live" APP and became a new agent of the underworld in the human world. When forced to complete various supernatural tasks, he met Shen Qingwu, a female ghost from the Republic of China. This mysterious woman wearing a moon-white cheongsam can not only appear during the day, but also holds a "Permit to Return to the Sun" specially approved by Hades. When the judge of the underworld issued an order to exterminate, Jiang Linyuan discovered that this century-old conspiracy was closely related to the past of his ancestors' tomb robbing. In the process of completing the strange live broadcast mission, the two gradually uncovered the shocking secrets hidden in the Yin and Yang realms.
