The 1930s. Solal has a good position in the League of Nations. On duty, he came to the capital of Switzerland, where he meets a beautiful Ariana, with which the hero begins an affair, which is, however, greatly overshadowed by the fact that the girl has a husband. On the background of the beginning of the sinister events that will make the whole world tremble in the future, an incandescent personal drama emerges in disproportionately smaller scale.