A Detective and a fortune-teller join forces on a kidnapping case in Busan, South Korea. Based on a real-life 33-day kidnapping case in Busan in 1978.

Based on a true story from 1978 about a girl that went missing in Busan, The Classified File combines non-stop action with technological thrills. Detailing the inner workings of the Korean police force, this compelling cop drama offers a sharp critique of law enforcement and political corruption.