Young scientist Alexey Romanovich invites all his colleagues interested in his experiment. 
Among the guests are collector, the member of the...

The young scientist Alexey invites his colleagues to present his invention. The real reason for the presentation lies in the teacher Alexey, whom he...

Young and active nationalist Aleksander Kesküla makes up his mind to use Lenin, the Bolsheviks' leader, in order to start a revolution in Russia...