Kreuzeder was once a successful commissioner, but now he rarely solves a case. After more than 20 years in the service, he just wants to retire as quickly as possible and leave everyday life in the homicide squad in Lower Bavaria behind. Kreuzeder is of the opinion that humanity is coming to an end anyway, so he prefers to get drunk in the tavern and flirt with the waitress Gerda Bichler there instead of going about his work.
A scientist blames the head of a large company for an ecological disaster in South America. But when a volcano begins to show signs of erupting, they must unite to avoid a disaster.
The Alps, late 19th century. Greider, a mysterious lone rider who claims to be a photographer, arrives at an isolated lumber village, despotically ruled by a family clan, asking for winter accommodation.
A promise, an old, destroyed horse head violin and a song believed lost lead the singer Urna back to Outer Mongolia. Her grandmother was forced to destroy her once loved violin in the tumult of the Chinese Cultural Revolution. The ancient song of the Mongols, "The Two Horses of Genghis Khan", was engraved on the violin's neck. Only the violin's neck and head survived the cultural storm. Now it is time to fulfill the promise that Urna made to her grandmother. Arrived in Ulan Bator, Urna brings the still intact parts of the violin - head and neck - to Hicheengui, a renowned maker of horse head violins, who will build a new body for the old instrument in the coming weeks. Then, Urna leaves for the interior to look there for the song's missing verses. But she will be disappointed. None of the people whom she meets on the way appears to still know the old melody of the Mongols.
