1942, Polar region. The Germans are preparing to capture Murmansk. The submarine Sch-721 is considered lucky, and its captain Aleksei Strogov has the ability to extricate himself from the most difficult situations. He also develops tactics for a periscope-free torpedo attack, despite the skepticism...
Summer, 1940. Foreseeing the collapse of the Ulmanis regime, the owner of a ship sailing off the coast of Latvia decides to flee the country. Subsequently, the sailors learn about the establishment of Soviet power in their homeland, and the ship changes course...
