A retired police captain, Siwy, tells a reporter about his latest action, carrying on his own investigation into the mysterious death of a Ewa Salm, a.k.a. Princess. She was a witness in a case where the defendant pled guilty and was sentenced to eight years in prison. Siwy doubts the defendant's guilt and risks his life to apprehend the real killer.
Imperialist spies try to disrupt and stop production in a large steelworks.
