In order to investigate the darkness of the island women's prison, a female reporter entered the prison alone on a reasonable excuse. Here, she witnessed the misfortunes and sufferings of the female prisoners in prison. Under the cover of other female prisoners, some female prisoners risked their death to have an affair with fierce men who came to deliver materials to the prison; some female prisoners suffered more ruthless torture because they did not follow the harsh management of the warden and his wife, and even some female prisoners in QB;, without male prison control, were automatically or forced to vent their sexual desire with female prisoners in the same prison. Some female prisoners escaped, only to be captured and thrown into prison again, waiting for them with fierce screams and severe punishment. At the end of the film, the female reporter secretly took her firsthand information and walked painfully to the prison gate. A long shot, a gradually distant figure, leaving the audience is a gripping heart, is a heavy thinking.