Alfred meets the black duck family Wana in a train, who are refugees from their home country, where the white geese conduct the Apartheid policy. Lispel discovers that Alfred hides illegal immigrants in his house.
Alfred and his friends escape from prison, along with the Prince of Salam, who is in love with the princess of Yil. The love is mutual and the king of Salam sees little harm here, but the king of Yil is not as indulgent.
The king of the Land of the Pyramids wants to build a dam. Professor Paljas offers to make plans to generate solar energy but Rokodil and Hannibal, which would make the dam plans are not happy and hire Dolf to steal Paljas' drawings.
Het Land van Twee is divided into the rich North and the poor South. The south is plagued by a mysterious disease, the Mozons, which causes rapid aging. A soothsayer tells Alfred that he has dreamed of a clown on the moon that might be able to help.
Professor Paljas has designed a submarine, but has a dispute with his business partner, an avid golfer, about the name. They decide the dispute with a game of golf, but Paljas has an injury, so Alfred aids him.
Professor Paljas received an invitation from Dokter Livingstone to join him in on an expedition through the jungle, fascinated by the legend of a pot of gold at the end of the rainbow, Alfred, Henk and Pikkie go along with him.
Professor Paljas worries about acid rain and wants to develop an environmentally friendly fuel. K. Rokodil and Hannibal see their interests in the oil company in danger and hire Dolf to steal the drawings.