Seven years after the end of the apocalypse, identity examiner Li Youning found that he was already dead in the official files. A woman who uses her name proves that she is the real Li Youning based on her house, drug qualifications and custody of her daughter. In order to regain her life, she reconstructed the tampered identity chain in the ruins after the disaster, but found out that it was she who personally sent the names of the dead to the living in the first year of the apocalypse. What she wants to find out is not only who stole her life, but also the survivors who were erased from a file.