Wealthy company director Ernst Schmitt should retire from business after undergoing a serious heart operation - at least as far as his sister is concerned. In the meantime, their son Marc has taken over the reins of the company anyway. But Ernst Schmitt is mistrustful when his nephew decides to close down the completely unprofitable chocolate factory in North-Rhine Westphalia. Under the pretence of desperately needing a holiday in the family-owned Schlosshotel, he and his chauffeur and confidant Hubert set off for North-Rhine Westphalia to see how things look first hand.
Upon arrival, they change roles: Ernst Schmitt has himself registered incognito as a driver in his own factory, whilst Hubert plays the big-shot millionaire on a short trip. This unfamiliar plunge into the world of his own youth proves to be a pleasantly nostalgic experience. On the other hand, he finds out about the machinations of a corrupt junior manager, in addition to being able to prevent an intelligent young woman from doing something stupid. In the meantime, Hubert is increasingly enjoying parting with money in his role as a millionaire, thereby making the acquaintance of a charming lady which in turn causes Ernst some degree of concern.