​

It takes place during the Great Patriotic War, in a country that managed to preserve its neutrality. While its name is never revealed, the movie does leave some clues, like Scandinavian landscapes, mentions of "the neighboring country at war with us" and, finally, the flag of Sweden noticeable within several frames.

But no matter what country it is, remaining truly neutral is hardly possible: too large-scale are the military operations, too close is the war action, and too many political players are struggling to win the state over to their side.

The main character of the film, Ambassador Koltsova, is working hard to prevent that the country where she is entrusted with the maintenance of diplomatic relations from supporting the Nazi bloc. To do this, she will have to expose the provocations by the Nazi Germany, strengthens the reputation of the USSR, and win over politicians, industrialists and common people alike. All of the above – while bearing the highly demanding title of the first female ambassador – which she does with great dignity, charm and nonchalance.

There is an episode, for example, when the king himself makes to Koltsova a subtle remark that Ambassador's duties are believed to be a male-only domain, and it is hard to tell whether a woman can master it sufficiently... The heroine immediately retorts that His Majesty himself chose to spend his free time by doing embroidery, a hobby that is widely believed to be a female-only domain, and yet had mastered it to the extent that not a single knot can be found on the backside of his oeuvres. Following this, she expresses her hope that as long as she is in office, the monarch, in his turn, will not find a single wrongdoing in his country's relations with the USSR.