The film "Tumšā robeža" (The Dark Border) is a drama set in 1938. It follows Latvian counter-intelligence officer Baltais, who is sent on a secret mission to a border town. Posing as a journalist named Ilmārs Blanks, he aims to recover vital state security information and expose a Russian agent. In this place, situated between two worlds, he uncovers the truth behind the mysterious murder of his beloved. The film is in Latvian with English subtitles and has a running time of two hours.