The film "The Dark Border" tells the story of Latvian counter-intelligence officer Baltais, who is sent on a secret mission to a border town in 1938. Posing as journalist Ilmārs Blanks, he attempts to recover information vital to national security and expose a Russian agent. Baltais finds himself in a place that serves as a narrow strip between two worlds and conceals the truth about the mysterious murder of his beloved woman. The film has a running time of 2 hours.