One day, Rogi brags about the rubbish he's collected to the little buses. But the other little buses get angry at him because the rubbish is so dirty. The next day on his route, Rogi meets a camping car named Windy who has the same taste as he does. Rogi feels close to Windy who says that he travels the whole world freely, so he invites him to the garage.
Meanwhile, the little buses who are now regretting getting angry at Rogi decide to apologize to him. But Rogi is busy hanging out with Windy. Tayo, who was waiting until late at night to apologize to Rogi, decides to find Rogi before he goes to bed. But strangely, he's not in the garage. Where could Rogi have gone?