It tells the story of South Korean prosecutors who refer to evidence related to murder cases, with a large scale of violence and cruelty, and a prohibition of outflow as "extremely secret archives". After learning of rumors that the videotapes were sealed in the underground storage room of the prosecutor's office, producer Jin Xiucan unexpectedly obtained the relevant videotapes and decided to produce a documentary based on this theme.
It tells the story of South Korean prosecutors who refer to evidence related to murder cases, with a large scale of violence and cruelty, and a prohibition of outflow as "extremely secret archives". After learning of rumors that the videotapes were sealed in the underground storage room of the prosecutor's office, producer Jin Xiucan unexpectedly obtained the relevant videotapes and decided to produce a documentary based on this theme.