This film has only one scene and one actor, and it only takes one night. All the stories are completed by the characters during the phone calls. This film is not a pioneering experimental film, but a genre film, with a certain suspense element and a reversal at the end. Late one night, insurance investigator Li Siqi accidentally learned that he was infected with AIDS, so he called all the people he had had sex with to verify who infected him with AIDS. On this night, all the truth about Li Siqi's life and all the emotions broke out in one night.