Poppentheater Pedrolino and Pierke bring a story around Gwendolyn's birthday party.
At princess Gwendolyn's birthday party, everything goes wrong due to the arrival of the malicious quack Chagrijn who comes to throw a spanner in the works. Pierke will have to solve it again, but that turns out to be more difficult than expected, because a kind of double of him is also walking around and that naturally causes the necessary misunderstandings and side-splitting situations ...