The film "Tumšā robeža" (The Dark Border) is a drama set in 1938. Latvian counter-intelligence officer Baltais is sent on a secret mission to a border town, disguised as a journalist, to retrieve vital state security information and expose a Russian agent. In this place, he also uncovers the truth about the mysterious murder of his beloved woman. The film is in Latvian with English subtitles and has a runtime of 2 hours.