Warum sind sie gegen uns?

About this title

The young unskilled worker Günter is employed in a foundry and spends his free time with friends of the same age. Together they form a motorcycle gang. But then Günter meets the daughter of an authorized signatory, Gisela, whose parents do not take kindly to the allegedly indecent young man. Gisela takes flight and introduces Günter to her parents on the spur of the moment so that they can overcome their prejudices. But it comes to a violent quarrel between Gisela's father and Günter...