A group of musicians, whose band is called "Balkan express", in fact a quintet of small-time crooks, are spending the first months of war taking care only of their lives. And then, by tragicomic chance, they become Partisan diversion helpers and heroes. After that, their only way out is escape to another part of the country, with the Gestapo on their tail. They hide in "Marlene Salon" forgetting that the bordello house of that type was an ideal place for espionage during the war. Instead of peace and rest, they get involved in many new tragicomic complications...