"File No. 81" is American A drama TV series, the theme of this TV series revolves around science fiction, suspense and horror as the main tone. The TV series will premiere in 2022, and there will be a total of 8 episodes, each 60 minutes long. The TV series is about archivist Mamodo accepting a mysterious restoration job to restore a damaged video tape from the last century. Through this incident, he was forced to be involved in a cult case. The video tape contained a video about a previous documentary filmmaker's investigation of a cult. The investigation of this cult revealed the cult's shocking conspiracy and the director of the documentary was also hunted down. Under such a background, the protagonist uses his own wisdom to deal with the cult, and finally wipes out the cult
The theme of the film is suspense and horror, creating a thrilling atmosphere through terrifying light and shadow effects. Coupled with some unique horror music from abroad, the whole TV series has a strong sense of atmosphere. The theme of the TV series is that evil does not prevail over good, and justice will surely defeat evil.