Young artist Dan dreams of success, but for now he is serving community service cleaning the city. His boss is Kristián Hovorka, who works with Ota in the Technical Services Department at the Pilsen City Hall, where they are responsible for cleaning the city. Dan meets Betka at a disco, and Kristián is attracted to Dan's pretty sister Danka, who is always cleaning up after her brother. But not everything goes according to plan. Betka's jealous friend and her boyfriend Robert decide to complicate...