Bertha Kinsky works as a governess in the Suttner household and has an affair with Arthur Suttner, the son of the house, who is a few years younger than her. When the affair is discovered, she is forced to leave the house and gets a job with Alfred Nobel. Nobel has become very rich thanks to the invention of dynamite. The somewhat reclusive Nobel and the prudent Bertha quickly take a liking to each other. But one day, Arthur Suttner appears on the doorstep, having broken with his family in order...