The Swedish invasion of 1965 is underway. Swedish troops attack Poland and occupy a significant part of the country. A Swedish governor settles in Warsaw, arousing widespread hatred. Three teenage residents of Warsaw, Maciej, Kacper, and Kazik, with the help of Mr. Rafałowicz, decide to drive the Swedes out of the city.

The Swedish invasion of 1965 is underway. Swedish troops attack Poland and occupy a significant part of the country. A Swedish governor settles in Warsaw, arousing widespread hatred. Three teenage residents of Warsaw, Maciej, Kacper, and Kazik, with the help of Mr. Rafałowicz, decide to drive the Swedes out of the city.