During the global economic crisis, "Morgenrot" mine is due to be closed due to unprofitable results. With the use of a machine forbidden for security reasons, the mates try to work more effectively and thus save their jobs. A serious accident happens.

GDR and West Berlin in the 1950s. Hans Nettermann, a designer at the "Komet" bicycle factory, is a favorite of the BSG road riders. His dream is to one day ride in a stand-up race. A construction error throws him back in the road race. They work for a long time to fix it. Then he is persuaded to go to West Berlin to become a professional rider. Although he makes it to the top class, he also learns about the scams in professional sport. He marries Marianne, who has followed him and tries to persuade him to return to the GDR, which he eventually does. After some difficulties at work, he is nominated for the first amateur endurance race in the GDR and wins.