In Denmark Bassie (Bas van Toor) and Adriaan (Aad van Toor) are told they can find a package in the hands of a children's friend. When they find the package, they travel to Belgium by hot air balloon. The package is hidden somewhere where the smallest thing is on earth is really big. In Belgium they meet their old friend Danny Verbiest who knows exactly what that means. B100 (Hans Beijer) is still, quite unsuccesfully, traverling behind Bassie and Adriaan.
