Paul goes to the Hotel Metropol where his Grandma Liese works as a lavatory attendant. She’s talking to a customer, when Paul comes in to confront her with a lie. In the evening, he visits the Pergamon Museum with Millie, where his uncle works as a night watchman. But is there a burglar in the museum? They sneak back in and find Henri talking to the customer who’d been with Liese in the afternoon.
