Boris is called up for military service in a "hot spot". His bride Larissa, soon receives a letter stating that he was missing. A friend of Boris Nikolai, who was secretly in love with Larissa begins aggressively courting her and finally makes a proposal. The girl is forced to accept it. On the eve of her wedding Boris unexpectedly returns. Their feelings for each other are still there, but the young man disappears again ...

In April of 1945, Germany stands at the brink of defeat with the Russian Army closing in from the east and the Allied Expeditionary Force attacking from the west. In Berlin, capital of the Third Reich, Adolf Hitler proclaims that Germany will still achieve victory and orders his generals and advisers to fight to the last man. When the end finally does come, and Hitler lies dead by his own hand, what is left of his military must find a way to end the killing that is the Battle of Berlin, and lay down their arms in surrender.

A sudden hero dressed in all black (including underwear) emerges in the small Russian town to fight for justice.

Nikolai (played by Sergei Dontsov) has been fired from his job as a music teacher and has to live in the gym until he finds a place to stay. Finally, he gets a communal room in the apartment of Gorokhov (Victor Mikhalkov). The room's previous inhabitant, an old lady, has died a year ago, and yet her cat, Maxi, is still in the locked room, healthy and fat. Soon, Nikolai and his neighbours discover the mystery: there is a window to Paris in the room. That's when the comedy begins - will the Russians be able to cope with the temptation to profit from the discovery?