For the music historian Jakob collapses his well-ordered, quiet world, when he realizes that he can earn no more money with his original work. When he hears that a Türkpop label is looking for a summer hit, he sees his chance. Although this genre of music is completely alien to him, he decides to expand his knowledge in this area in order to find "the" summer hit and be able to pay his rent again. Out of necessity, the lover of Bach cantatas and dark concert halls exchanges his old Berlin apartment for an extended weekend for an apartment in Istanbul

At the beginning of the weekend, the detective commissioner Tina Campenhausen wanted to spend with her family, she is called to a hotel in Travemünde. Guest Brederstein lies dead in the tub. Everything points to suicide. Tina Campenhausen knows the dead that she keeps secret from her colleague. Tina is caught up in her past when her sister, Jenny Hansen, whom she has not had any contact with for years, is at her door. Does Jenny have something to do with the death of the hotel guest? Tina gets into the biggest conflict of conscience of her life.

Alex Berger, a respected teacher, is shaken when a student he once slept with is found murdered by a lakeside in his small Brandenburg town, prompting police to order mass DNA testing. As detectives close in, Alex confesses the affair to his wife but insists he’s innocent of the murder, while the strain threatens to tear his family apart.

Divorced and single bailiff Carla Schön has many problems with her pubescent daughter Eva. However, she cannot use these problems because she has to work in her everyday life. Even in her hobby, orchestral playing, she is absolutely tense. But then she meets the musician Andi Jannings and falls in love with him. He is a dry alcoholic and is in constant dispute with his ex-wife. To make matters worse, he is also a caretaker at Eva's school. Torn between her new love and daughter, Carla soon finds that her next job has to do with Andi. He has money problems and, accordingly, has not made any maintenance payments to his ex-wife.