夏日Albert who lives in the small Danish provincial town Kalleby. Albert is always up to no good, but he's also really clumsy. One day he comes to overturn the city's landmarks - a statue of a balloon captain. The townspeople are mildly not happy with his recent accident, so with his best friend, Egon, Albert takes off on an adventure to find a real balloon. On their trip postponed friends of both robbers, gypsies and the world's largest diamond.