Zdeněk Duss

Ing. Bernard announces that his wife has not returned from visiting relatives in Berlin. Lieutenant Tereza Machátová, who together with Captain Landa is investigating the matter, puts the facts into connection with the discovery of the drowned woman's body.

Second half of the 19th century. In a small town in South Bohemia, fifth-former Jan Ratkin is living through the confusions of first love together with his classmates.

The story of young boys who have proven their loyalty to the republic unfolds in the setting of a boarding school for miners' apprentices. A tunnel is dug from the Engels mine to the Ludvik mine, so that the two mines can be connected to form the Engels mine. However, the project is targeted by subversives who want to flood it, regardless of human lives.