Based on Verne's book The Mysterious Island, five POWs escape from a camp in a balloon during the Civil War and crash-land on an uninhabited island in the Pacific. Trying to settle with their lives they find someone is helping them.
1941 year. The flagship of the head detachment of the Black Sea Fleet gives an order to one of the submarines to remove the crew from the damaged torpedo boat. An enemy cruiser discovers a Soviet submarine and bombards it with bombs. Submarine forced to lie down. But the task will be completed - and the enemy will take flight.
