I think they did a nice try at filming an episode of the (in the Dutch language area) famous comic series "Suske en Wiske", but perhaps tried to stay too close to the scenes in the comic itself, which might be hard to film.
On the positive side there is the scenery: they picked real nice locations for the films, giving it a nice atmosphere. Suske and Wiske are played quite decent. Wiske appears a bit older than you would expect from the comic books. As said, they tried to stay very close to the comic itself, which makes a nice story.
A definitive downside is the actor(!) playing Tante Sidionia. Why they casted a man to play this female role may remain a mystery, but a man speaking in falsetto utterly fails in putting anything other than a weak parody on the screen.
Another downside is the quality of the action scenes, which appear clumsy.
It's a nice movie to rent and watch on a rainy Sunday afternoon with the kids.