A Soviet warship is on a friendly mission in the United States. A young officer Nikolai Korenev meets an American girl, Mary. A romance begins between them...

In the waters of the Pacific Ocean, regular maneuvers of the Soviet and American squadrons are taking place. After months of autonomous navigation, our military frigate heads to its home base. The distress signal received forces sailors to change course. The CIA arranges a provocation: on a secret American base, one of the missile launchers was prepared for a real strike on the enemy’s squadron. Instead of saving people, Soviet sailors will have to intervene in the deadly game started by NATO. At the cost of tremendous effort, the crew of one of the Soviet ships managed to prevent the catastrophe provoked by CIA agents. They enter a real battle...