The beginning of the XX century. In Munich, the Leninist "Iskra", an illegal newspaper of Russian Social Democrats, began to appear. The Russian conspirator Konkordiya arrives from Munich at the railway station of the Bulgarian port city Varna. She meets the Bulgarian Ivan Zagubanski and gives him two suitcases with false bottoms, which contain a secret consignment of the latest issue of a newspaper. About the young, courageous revolutionary Ivan Zagubanski, who was one of the first couriers to bring Iskra from abroad. The film showed an ideological, moral clash of people preparing a revolution with the guardians of the royal order.

Yana is a teacher. Her courage intrigued the German nobleman von Cheeter. Yana receives an order from the Soviet intelligence service to go to Berlin. There she finds herself in a society that shocks her with its arrogance, cynicism and nationalistic prejudices. After giving valuable information, the Gestapo seizes her. Yana is tortured but will not betray her friends.

After getting beat up by his dad, the 18-year-old Asen runs off from his home. The reason for the beating was that Asen tried on father's old wedding suit. The boy did not know that in the suit there was hidden money. Asen goes to live at the place of the General. The father wants a meeting with his son. His partners observe the meeting. When they hear that Asen tries to convince his dad to turn himself in, they stab him with a knife. They kill the father afterwards. The General wants the father to be buried with his wedding suit, unaware that the money, which is the reason for the misfortune, will be buried with it.

Mityo Ganev is a leader of the armed bandits. The authorities accuse the Communists of his robberies. The detachment commander, Chalaka, and Mityo Ganev have a meeting but fail to reach an agreement. The police burn out Mityo's house and send his mother into internal exile. Chalaka cuts him off from his logistical support base. Mityo agrees to join the partisan detachment. Mityo and Velyo hold up the paymaster of the army garrison. When they take the money, Mityo wants to give it to the family of the exiles. Enraged, Velyo hands the detachment over to the Colonel. Mityo kills the traitor. The police and he army launch a major operation against the partisans. In a fierce battle, Chalaka leads the detachment out of encirclement while Mityo covers their retreat. A bullet hits him.