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”...

An officer accidentally leaks information about the first test of a new aircraft model. When spies get hold of this classified information, the development of the new airplane is under threat.

The story of the "Hutsul Robin Hood" Oleksa Dovbush, an 18th century Carpathian Mountains outlaw who's a popular figure of Ukrainian legend.

Based on the novel of the same name by Mikhail Sholokhov, about the fate of people broken by the First World War, the October Revolution of 1917 and the Civil War in Russia (1917-1922), about the collapse of the foundations and ideals of the Don Cossacks of Russia at the beginning of the XX century, about the personal tragedy of the protagonist — Grigoriy Melekhov.