The police investigates the circumstances of death of Tereza Kabátová (Marie Drahokoupilová) who was found in a crashed car. Her husband Frantisek Kabát (Zdenek Hradilák), director of Stavoprojekt, enjoys confidence of the workers, in addition, he comes from the workers family. He is also favored by his secretary Eva Martincová (Karolína Slunécková).