Going home to Budapest, Illona acquainted with the famous test pilot Tibor Vari. He offers a ride ee, and on the road tells her his full of romance and danger of life. In conclusion, he invites her to spend an unforgettable evening aboard his home-barge on the Danube, listening to the lapping of waves … Alas, Ilona tells him that she married a year and their meetings are not possible. At home waiting ee scattered, immersed in the scientific work of the husband. Beauty-wife hardly interested him, but the growth rate of algae aquarium. And the next day in their house appears Wari. As it turns out, they are friends with Stefan for many years, but lately it has not been in the country and the friend’s wedding, he knew nothing … Now Vari bound hand and foot, he can not care for the wife of another, but the Stefan begins to show interest in his assistant Lisi … Ilona, torn between two men with grief decides to go to the dancer and began performing in a nightclub “Trocadero”. (other title: The Blue Fox).