For a job, Alina has to accept longer working hours and long business trips. The single mother has to reorganize her everyday life with her daughter Lilia and asks her ex-boyfriend Jarek to teach her the violin lessons. While Lilia finds it difficult to come to terms with the new situation, Jarek soon finds pleasure in contacting violin teacher Clara and her sons - much to the dismay of Clara's husband. When Lilia gets the chance to change to another teacher as a master student, the contact with Clara breaks off. Until Jarek and Clara meet again by chance a few months later.
A young woman is found raped and bludgeoned to death. Her father can’t reconcile himself with her death, and even less with the fact that the murderer was never found. Half of his life he continues the search. Finally, after more than 20 years, as DNA-analysis becomes a factor in forensic medicine, new perspectives open.
A year ago, Katrin and Max got to know and love each other with the support of the phlegmatic bass dog Kurt. Should they now match their friends and marry? At first it doesn't look promising: Katrin is fighting for a job in London and Max is constantly gone, he seems to meet other women. The help of a second Christmas dog is needed to steer fate in the right direction.
