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.

Vlasta Chramostová
as Ruzena

Majka Tomášová
as confidant Herta Lenzová alias Anca Nováková

Miloslav Holub
as Dönnert

Vladimír Ráž
as Antos

Otomar Krejča
as Bor

Karel Peyr
as Cortus

Jaroslav Mareš
as Hans

Věra Kalendová
as Kraftová

Milka Balek-Brodská
as Dozorkyne

Terezie Brzková
as vezenkyne Karlicka