Two mismatched detectives must pull together to solve a mysterious murder. The investigations lead the women back to turbulent Zurich in the 1980s. The police officers mercilessly poke at the suspects' old wounds and tear them open again. On her first day at work, profiler Tessa Ott (Carol Schuler) is thrown in at the deep end: a burned body with a headshot wound was found near Lake Zurich. At the scene of the crime, Ott is greeted frostily by her new colleague Isabelle Grandjean (Anna Pieri Zuercher) - the French policewoman is certain that the inexperienced Ott only got the job thanks to vitamin B. Because the young colleague comes from a long-established Zurich family and seems to know everyone. Grandjean reluctantly involves the profiler in the investigation.
However, she soon realizes that although Ott has little practical experience, he makes up for it with persistence and an analytical mind. And as different as the two women are, they complement each other perfectly in the murder investigation. They are highly complex. So it seems almost impossible to identify the burned bodyfind out. Her Buddhist back tattoo and the card from a psychotherapy in her pocket bring the investigators a step further and lead her back to the turbulent Zurich of the 1980s. In the time of the opera house riots, when there were hard fronts between the police and the youth movement. And what happened 40 years ago now had murderous consequences. The group of suspects consists almost exclusively of exponents of the movement who are now of retirement age.
Among them a committed punk musician, a callous journalist, a loner who never got over the tragic events of the time. A friend of Teresa Ott's who is addicted to drugs also gets into the crowd of suspects and makes one thing clear above all: Zurich may be the largest city in Switzerland, but it is also a village. Grandjean and Ott meticulously put their investigative puzzle together and thus get a more accurate picture. But when horrifying courier mail arrives at the farewell aperitif for the outgoing police commander, the case is catapulted into a new dimension. And instead of one, the detectives are suddenly confronted with several murder victims.