Die große und die kleine Welt.

The taxi driver Fritz gets to know the millionaire-heiress Iris and marries her against the wishes of her family. They live together in a small apartment and are very happy. But Fritz wants to offer Iris more and thus finds a position as a laborer in a large car factory and ends up making a career for himself as a race car driver. But while he is driving from one victory to another, he is getting more and more estranged from his young wife. As his career starts to go downhill, he notices the mistakes he has made and tries to win Iris back.