Koen Kampioen wants to score

Koen reads a shocking news item in the newspaper. His football club, Stark, is in trouble and even on the verge of bankruptcy! Koen and his teammates try to find sponsors, but it's not really working. He doesn't really have time for it anyway. Koen is so preoccupied with football that his grades are slipping. Because of this, he's no longer allowed to train, even though he's experiencing a slump in form! Things aren't going well in Koen's circle of friends either. How can Koen overcome all these problems? And will he be able to keep his starting spots at Stark and in the Dutch Under-15 team?