Kameleon en het Watermonster (2022)

Panic in Lenten when a big pike scares the inhabitants. Scientists Jansen and Jensen want to catch him as soon as possible, since their mentor Professor Foekes has disappeared. Famous heroes Hielke and Sietse Klinkhamer and their best friends don't believe the suspicious duo. They discover that the pike is very environmental and takes care of cleaning the Dutch waters and that Jansen and Jensen actually work for the criminal mastermind Mister X who wants to sell this unique creature.