Turin in the 1950s: Best friends Valentino and Adriano are thirsting for action. Together, they embark on the greatest adventure of their lives, becoming the first Italians to circumnavigate the world by bicycle. Hundreds of photos and Valentino’s diary bear witness to their journey, which they began and ended 70 years ago in rainy Turin. Now it is Valentino’s son who, together with his mother and daughter, embarks on a journey into the past to explore the history of a friendship that encompassed the entire world.