The Gestapo hits the trail of a secret radio station installed in Jerzy's apartment. All the service, except for Jerzy, who manages to play the role of the unconscious landlord, is arrested. Jerzy is suspected of collaborating with the Gestapo. He is threatened with a death sentence for treason. Thanks to the efforts of friends, the matter is clarified; completely rehabilitated, Jerzy returns to the underground group.
On August 1, 1944, the Warsaw Uprising broke out. Zygmunt, Jerzy, and Columbus fight on the barricades of heroic Warsaw. After the initial successes, they retreat under the pressure of the overwhelming enemy forces to the Old Town. Among the insurgents there are many fallen. One of the victims is Malutki.