The playing children Teun, Toon en August break a window and have to buy a new one. They place a fake window back but Ome Willem recognizes their trick and repays them. Jan Klaassen assures everyone he never did any mischief.
In the cold winter Ome Willem runs on the street just wearing swimming trunks; that is too cold for him. Ome Willem takes a warm bath with his girlfriend. Everybody takes a peak in a dressing room. The doctor comes for Ome Willem.
Toon and August go underground via Tinus' maintenance tent. There they meet scary Pierlala who wants to take them to the Land of Hupsakee. Ome Willem wants to watch the soccer game; so he tries to connect a water hose to the television.
Ome Willem and also Jantje disappear. The others stay behind very worried. During a bicycle tour of Ome Willem and Jantje, the latter almost drowns in a river. They return but Ome Willem had to change clothes and is hardly recognized.
The thief steals the matches. Ome Willem calls the fire brigade to find the fire making thief. Teun, Toon and August catch the thief and take away the matches; they hide them for Ome Willem who wants to smoke a cigar.