Bennie en Jenny is opgewonde toe hulle hoor professor Fungus gaan help met ’n nuwe pretpark wat binnekort oopmaak. Maar dan vind Bennie en Jenny uit iets is nie pluis by die pretpark nie. Watter planne voer die vreemde De Vries-tweeling in die mou? Bennie and Jenny are very excited when they hear Professor Fungus is helping to develop technology for a brand-new theme park that’s opening soon. But soon Bennie and Jenny start suspecting that things aren’t quite what they seem at the theme park. What mysterious plans are the strange De Vries twins cooking up?