"Iskra" is the codename for the plan of the operation of the Soviet troops to break the blockade of Leningrad. In January 1943, the blockade of Leningrad was broken. A corridor 8-11 km wide was formed between Lake Ladoga and the front line.

In June 1941, the Extraordinary Defense Headquarters of Leningrad, under the leadership of Zhdanov and Voroshilov, decided to build the Luga defensive line. Heavy fighting west of Pskov forced units of the front to withdraw, and on July 9, Pskov was also abandoned. The battles in the Luga direction held back the enemy. The first attacks of the Germans, intending to cross the Luga line on the move, were repulsed with heavy losses for them.

The daughter of a sailor who died at sea, she lives in a port city with her mother. The shipowner threatens to kick them out of the house if they don't pay for six months or if she doesn't marry him. The handsome sailor and rebel appears in the city, and makes her fall in love with him. Shipowner finds out about this. When the police commissioner shows him the photograph of the rebel sent, he recognizes the sailor, who got a job with him on a ship on which weapons are transported under the guise of oranges.

A story about the tragic events in the life of besieged Leningrad from September 1941 to January 1943.

Based on the story of the same name by A.P. Chekhov.