Grandpa Hans' birthday is coming up and the kids are acting like themselves: Theo writes "yes" and "no" on his hands so he can be understood, Philipp practices for an entrance exam using dance tutorials. There are some surprises when they arrive at their grandparents: Stefan and Nina are expecting; Philipp suddenly tells everyone he wants to be a ballet dancer – Grandpa Hans has other ideas about this. He challenges the boy to a wrestling match. When Kurt steps in to take Philipp's place, the whole 'masculinity contest' ends in hospital. Philipp can now pass his exam without injury.