One of Us

April 1941 According to intelligence received by the Chekists a fascist sabotage group plans to blow up one of Moscows defense plants To find out the plans of saboteurs working under the auspices of the German embassy the NKVD sends one of its best employees Sergei Biryukov to the plant He finds contact with the fascist agent Keller and finds out that the explosion is scheduled for June 21