Violetta is a ballerina in a provincial town. She is the daughter of an opera singer and a violinist. The years pass in anticipation of the big role, and the men she meets do not understand her and she remains alone. When the chance finally comes - to play the role of Odette, Violetta realises she has failed.

The Bulgarian intelligence officer Emil Boev is residing in Bern, close to Bulgarian political emigrant Goranov. The Swiss and German women Rosemary and Flora are interested in him. Goranov is killed. Boev searches his apartment and finds few fake diamonds and the list of the spies in Bulgaria. Boev and the boss of a foreign intelligence service Benton are stuck in a bunker together. At the decisive moment, Flora appears and Boev manages to get away with the list of the spies. Boev is on the way to Bulgaria.