About young graduates of the maritime academy and their first voyage at sea. About the difficult test of professional and human endurance that had to be endured by both the crew of the trawler "Kaira," which suffered a disaster during a storm, and the crew of the rescue ship Poseidon under the command of Captain Chigrinov, where the film's hero, Slavka Chigrinov, served, demonstrating resourcefulness, courage, and bravery in times of danger.

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