Kadeg's aunt is dead and he is admitted to hospital seriously injured. Dupin takes a closer look at his assistant's family and discovers that this was not the only mysterious death in their circle.

In 1980s East Germany, Berlin doctor Barbara is banished to a country medical clinic for applying for an exit visa. Deeply unhappy with her reassignment and fearful of her co-workers as possible Stasi informants, Barbara stays aloof, especially from the good-natured clinic head, Andre.

Georg and Regine Schlegel, both behavioral scientists, are involved in a traffic accident while their three adult children make preparations for their 40th wedding anniversary. The fact that there appears to be no will and that they all have very different ideas about what should happen to their parents' house reignites old conflicts.

A body is pulled out of the sea and it becomes clear this was neither a suicide nor accident… it was murder.

36-year-old Birgit desires nothing more than an intact family. Since she lives with her husband Andreas, the common child Philip and Sarah, her daughter from a previous, failed relationship in solid economic conditions in a terraced house, she feels very close to her ideal. Through Sarah's puberty, the family is put to the test. But Birgit believes that luckily only the formal confirmation of the adoption of Sarah by Andreas is missing.

Inspector Dupin actually wanted to spend his honeymoon with his wife Claire in a famous wine region, but when a murder occurs, the vacation is over.

On her 50th birthday, devoted mother and laundry worker Beate faces a life-changing medical diagnosis that prompts her to pursue a long-buried dream: swimming the English Channel. Juggling her daughter’s exams, granddaughter’s care, her son and his pregnant partner, and her best friend’s love life, she throws herself into grueling training. Amid familial resistance, and with friend Henni’s support, Beate braves the Dover–Calais crossing and rediscovers her own strength.

Ali misses the lavish party nights in Hamburg's Kiez: Ms. Melanie, Baby Bobby and the family's tile company have been his everyday life since he became a father. How can he make it clear to the young mother that there is still life next to the baby? Melanie can be persuaded to a wellness weekend with the friends, but only if Ali takes his father's role seriously.

For Neele and her life partner Steff, the dream of having one's own child finally seems to come true: Steff is pregnant. However, there was a confusion in the artificial insemination - instead of their carefully selected sperm donor, they caught a sperm donation from a gay couple: Kalle and Jens also want a baby and consider the confusion as a kind of coincidence. While the two men look forward to their time as active fathers, Neele and Steff see their harmonious trinity at risk.