Year 1648. Ukraine under the oppression of Poland. Polish nobility committing outrage, burning villages one after another. Hetman of Zaporozhian Cossacks Bogdan Khmelnitsky gathers the army of defenders of the motherland...

In 1921. With the help of Japanese interventionists, the White Guards defeat a Shaldyba partisan detachment. The remnants of the defeated detachment pour into Levinson's detachment. Partisan intelligence soon finds that the Japanese has surrounded the detachment. To save the main forces from defeat, Levinson decides to break through the chains of enemies.

Mostly lost (only 2 minutes recovered).

Natka, who dreams of becoming a captain, is sent to pioneer work. She takes her first assignment very seriously - and receives a trip to Crimea. In Artek, Natka is asked to replace a sick pioneer leader. The girl agrees. Soon, during the construction of a water pipeline, a dam breaks and a struggle for water begins. Engineer Ganin, who came on vacation with his little son Alka, also joins this fight. In the ruins of the old fortress, Vladik and Tolik find dynamite. To track down their enemies, the guys hide explosives and swear not to reveal their “military secrets”...