A few weeks before the Fall of the Berlin Wall, Pago, Rice and Bibi leave the calm city of Cesena looking for adventure: a ten-days-long holiday in Eastern Europe, in those places where the Soviet regime is still alive.

1991. Two years after their adventure in Romania, young Pago, Rice and Bibi have returned to their quiet and monotonous lives. When Bibi decides to meet Yuliya, a Bulgarian girl with whom he has been corresponding for months, the group of friends embarks on a new journey, this time to Sofia. However, Yuliya hides a secret that throws the three Italians at the center of an international intrigue, ending up in the crosshairs of Balkan crime and the Italian secret services.