I am reading AVI - Whose hut is that? (AVI-E3)

Who doesn't dream of having their own secret hut? One where your parents don't come and you can do whatever you want? Mijke and Ben build such a hut, but then neighbor Koos throws a spanner in the works. The hut has to go!

Mijke and Ben build a hut in the back of the garden.
Mom and dad don't know anything.
But then neighbor Koos comes to complain.
The hut has to go.
Mijke and Ben really don't feel like it!