This castle has its own ghost - a mysterious White lady. She emerges from the painting on the wall when someone speaks out magic formula. White lady is good ghost, she can make someone's wishes true. Even if it is a new duct. But a miracle is not the thing that Communist leaders want in the town.

The drama from the time of the Nazi occupation begins at the train station, where a transport with German soldiers is passing. The train is stopped due to improvised sabotage by one of the railway workers. Resistance liaison Růžena Kubínová is arrested in a random raid. The cynical councilor Dönnert discovers her false documents and has her brutally interrogated. He suspects that she could contribute to exposing the entire group. He puts a informant, Herta, in her cell.