Christine is looking forward to her vacation. Together with her friend Dorothea, she wants to go to Norderney. There, her friend Marleen is currently converting an old pub into a stylish bar. Christine and Dorothea are supposed to help with the renovation. But then Christine has to bring her dad Heinz along. Heinz always thinks he knows better. Can this still be a nice vacation? So in the mornings, we will work for Marleen. In the afternoons, we can lie on the beach and enjoy our vacation. That was our plan. Then my mother calls. "Hello, Christine," she says on the phone. "Guess what, I got an appointment for my knee surgery." I'm happy for her. My mother has been waiting for this appointment for a long time. But then my mother says, "Of course, your father can't stay home alone. He can't manage without me. Can't he come with you to the U...