A story about the life of a high school and a physical education teacher.
Soviet propaganda film. The first years of the VChK formation. Nurse Yunna Ruzhich and poet Lafar, who became Chekists, take an active part in uncovering a counter-revolutionary conspiracy in Moscow in 1918.
Germany in the thirties. Soviet spy Yaroslava Soboleva (aka Sophie Weinert) manages to destroy stocks of a new type of bacteriological weapon at the cost of her own life