After the deaths of d'Artagnan, Athos, Porthos and Aramis the Queen Anna of Austria has to ask for help of the heroes' sons. They, however, cannot fulfill her request on their own. The original musketeers have to literally return to live and embark on a new adventure.

The 3rd part of the famous trilogy by Alexandre Dumas about d'Artagnan and his 3 friends Athos, Porthos and Aramis.

Two skippers and their military ships are participating in big maneuvers.

Stuck due to bad weather at a tiny Far Eastern airport, several random travel companions become witnesses of an amazing meeting. As it turns out, one of the passengers was brought here not by chance. He is the son of an American pilot who ended up at the airfield during the war years, which was built to transfer planes from Alaska to Russia. And here he meets a woman who saved his father's life forty years ago.

Ilya Semenovich Melnikov is a history teacher in an ordinary Soviet high school. He is a very good teacher and his students and colleagues treat him with a great deal of respect. However, Melnikov faces a lot of difficulties in his work. In particular, everybody at school is spreading rumors about Natalya Sergeyevna, an Enlish language teacher and a former student of Melnikov, being in love with him. Exhausted by his mental suffering, Melnikov asks the principal to allow him to quit his job. At the end of the week that is to become the last week of Melnikov's teaching career the students of his class write an in-class essay on how they understand happiness. Svetlana Mikhailovna, their Russian teacher, is shocked by what one of the students wrote in her essay, nevertheless, she allows her to read it in front of the class. The other students express support of their classmate. Melnikov gets involved in the conflict, after which he reconsiders his decision to quit...