Two Italians, Sandro and Lorenzo, are traveling through the Soviet Union. Lorenzo has been to Russia before and now, accompanying his friend, gives him the necessary explanations. This peculiar technique allows us to see the USSR through the eyes of a progressively thinking Italian, to familiarize through Western countries with the grandiose transformations that were taking place at that time in the Soviet country, with the most essential features of the socialist reality, with the life of people, with the achievements of science, technology, culture and art.

Two Italians, Sandro and Lorenzo, are traveling through the Soviet Union. Lorenzo has been to Russia before and now, accompanying his friend, gives him the necessary explanations. This peculiar technique allows us to see the USSR through the eyes of a progressively thinking Italian, to familiarize through Western countries with the grandiose transformations that were taking place at that time in the Soviet country, with the most essential features of the socialist reality, with the life of people, with the achievements of science, technology, culture and art.

The young British archaeologist Tim Frazer is visited by an old friend: Henry Denston. At an agreed appointment, however, the man does not show up, giving rise to a mysterious investigation.

While on his way to visit Father Felipe, Sandro has a car accident and dies. Commissioner Selvaggi investigates the case, directing his investigations towards a group of the man's friends addicted to gambling.