Sunday, December 9, 1973, the day Switzerland came to a standstill. The first car-free Sunday during the oil crisis brought a calm over the country, which was already disturbed early in the morning. The body of a young woman is found naked and brutally mutilated in the snow near an upscale resort in Engadin. Gion Kundert, a newly minted police corporal and assistant in the investigation, must helplessly watch as the murderer eludes the police, wrapped in a web of money, power, and politics. Thirty years later: once again, a young woman is found brutally murdered. And once again, the investigation goes nowhere. When Köbi encounters Mia, a former love, it seems that fate is finally smiling upon him. Soon, however, this proves to be a mistake. Mia suspects that her ex-boyfriend has committed a murder and that another one will soon follow. Köbi is fra.