The 21-year-old student Oliver Mansfeld attends a boarding school in Frankfurt. There he meets the married banker's wife Verena. A passionate affair develops between them, which does not remain undiscovered by Verena's husband for long.

The days of the Schlosshotel Seefels appear to be numbered. Hotelier Theo Frobenius is forced to sell his hotel to group boss Mertens in the face of massive competition. Frobenius learns that Mertens wants to secretly inspect the hotel. In order to drive up the price, the hotelier wants to make him believe that the business is flourishing.