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...

Latvia in the late 19th century. Edgars, the coachman of Alaine manor, loves Kristine, the washerwoman's daughter, although he is too hot-headed for Kristine's mother to consider him a good suitor for his daughter. Servant Viskrelis and stable boy Sutka try to tempt Edgars to a life of drinking and a relationship with the barmaid Matilde. Meanwhile, Kristine is courted by a rich landowner, Akmentins.

Intelligence-diversionary group of athletes who know how to shoot snipers, run, jump, feel free in the water and under water, to withstand the monstrous load of hand-to-hand fights, will be able to reach the goal only going together, passing the task as a relay. Seven of them. Among them is a girl swimmer. It will be the most difficult, the last stage of the journey. The plot is based on the real facts of the great Patriotic war.

During WWII Red Army sailor suddenly gets to German underwater swimmers secret base...