The movie is about a patrol of extraterrestrial go down to Earth on a mission of peace. The three aliens come from the technologically advanced planet Oraina in which the war has been banned for centuries and solidarity and progress are values shared by all. Dr. Ivens, open-minded man, engaged in studies on longevity is their ideal partner, but subsequent experiences with other people in the world political and scientific cause a big disappointment: distrust, hatred and injustice seem in their eyes the only models of behaviour in our society. Pessimistic story by the director Sergei Bondarchuk.