1991. After the fall of the Berlin Wall, international tensions in the world seem to have eased, but many espionage operations continue to take place in the shadows: SISMI (Italian military security intelligence service) is on the trail of Paolo Dinucci, a former Italian carabiniere; Natalino Francalanci, a Tuscan leather trader; and Luigi Rampone, an electronic engineer from OTO Melara (a company linked to Italian Defense).
The three are smuggling sensitive information to be resold to Bulgarian intelligence services and the KGB.
Pago and Rice, on the other hand, have returned to their lives in Cesena, while Bibi for six months now, continues to commute between Italy and Sofia having become engaged to Yuliya, a Bulgarian girl.
Prompted by his new girlfriend, Bibi brings Yuliya to Italy so that she can finally meet her family and her two closest friends. Yuliya, however, finds herself under blackmail by officials in her country and, during her stay, secretly meets with Dinucci.
Unaware that the man had already been under surveillance by SISMI for some time now Italian agents also follow the woman’s trail.
A few days later, in the spirit of wanting to relive old adventures, Pago and Rice decide to leave again with Bibi and Yuliya for Bulgaria thus setting off a spiral of misunderstandings that will make the three friends appear to be international spies. The three, caught up once again in a series of unfortunate coincidences, now head for Sofia. They will experience a journey full of encounters, emotions and twists and turns. A film about discovering old, distant worlds that continue to exude a history not to be forgotten.