The discovery of an unexploded aerial bomb on a construction site brings a shock to the peaceful existence of a small town: the sudden threat makes at least some people rethink their previous attitudes.

Zdeněk Štěpánek
master mason Frantisek Vokác
Světla Amortová
Josefa Vokácová

Gustav Heverle
driver Zach

Vladimír Hrubý
hauler

Otto Lackovič
bulldozerist Jarda Sejk

Marie Kyselková
Lida, Sejk's wife

Rudolf Deyl
mason Toník Prokop

Vlasta Chramostová
Helena, Prokop's wife
Zdeněk Chudáček
Jenda, elder son of the Prokops
Stanislav Poláček
Olda, the younger son of the Prokops

Jana Štěpánková
Anca Cerná
Svatopluk Majer
innkeeper, Anča's father

Martin Růžek
mason Krahulík

František Vnouček
mason Perlešín

Vlastimil Brodský
mason Zajíc