The moody and conservative bus driver Mario, who has been driving seniors on sun trips all his life, gets a different mission: he is going to transport a bunch of hippies to an electronica festival in Croatia. The trip is bad enough for Mario, but the goal is even worse. The only bright spot in the world of strange people, drugs, noise, and dust, is Sunny. He is the son of one of the women on the bus, and when it turns out that Sunny is, in fact, Mario's grandson, everything is put on edge. Jim, Mario's son, with whom he has lost contact with, is also at the festival. Mario takes his bus and go, but he can't forget Sunny.