Hardly any piece of clothing embodies freedom, pragmatism and individuality as much as the Bluejeans. It is considered a symbol of the "American Dream" and is carried from arm to rich by almost every person. Despite their popularity, very few know the history of their invention. Around 1850, the German-Jewish peddler son Levi Strauss emigrated to America with his sister due to lack of prospects and anti-Semitism in the old Franconian homeland. His brothers are already doing a dry goods store there. When the big gold rush breaks out, Levi continues to San Fransicso, where he opens a textile goods business under his own name. The demand from the gold-diggers for hard-wearing pants is high. So the bustling businessman teams up with the ingenious Latvian tailor Jacob Davis, who came up with the idea of strengthening the seams of the pants with rivets. But a protection money patron dominates the port city and makes life difficult for them. And there are also difficulties with the patent.
Rome, summer 1943. Four children play war while the bombs of real war explode around them. Italo is the rich son of the Federal, Cosimo has his father in confinement and an atavistic hunger, Vanda is an orphan and a believer, Riccardo comes from a wealthy Jewish family. They are different but they don't know it and between them "the greatest friendship in the world" is born, impervious to the divisions of history that bloodies Europe. But on October 16 the Jewish boy is taken away by the Germans together with over a thousand people from the Ghetto. Thanks to Italo's father Federale, the three friends believe they know where he is and, to honor the "spit pact", decide to leave in secret to convince the Germans to free their friend. Yet another imaginative mission becomes reality, the three children travel alone in an Italy exhausted by war, among disbanded soldiers, deserters, occupying German troops, exhausted and hungry populations.