Liu Xiaolan (Jiang Wen), a beautiful woman writer, has experienced unemployment, lovelorn and creative bottleneck. After falling into the trough of life, she moved into a house on the third floor of an old community on the Bund, but she was always accompanied by gay honey (Wang Xiaotian). Since then, all kinds of neighbors have appeared one after another: graceful Dr. Wang (also a Confucian), eccentric Dr. Wang's wife (decorated), lively Dr. Wang's daughter (Zhang Tianying), 30 1 geek (Yan) and so on. Liu Xiaolan was puzzled by his neighbor's strange character and behavior. Since then, strange things have followed. Room 302, which is separated from her by a wall, is the weirdest. There is always a mysterious woman's voice and crying, but I have never seen her.
Liu Xiaolan's normal life is constantly plagued by 302 mysterious neighbors. In desperation, she began to explore from all aspects and found that 302 former residents committed suicide a year ago. Driven by many doubts and curiosity, she intends to find out the real causes of death of 302 women. However, every neighbor seems to be inextricably linked with the truth. At the same time, the danger is approaching Liu Xiaolan ...