After the Zurich heist of the century, the justice system uses spectacular methods to recover a 100 million painting. Stolen works of art of almost priceless value, a Serbian mafia gang and undercover investigators: the docu-drama series "It happened on... " tells how the Zurich justice system uses cinematic methods to recover two works of art, a 100-million Cezanne and a Degas, which were stolen by armed thieves from the Bührle Museum in Zurich on February 10, 2008. An undercover investigator infiltrated the Serbian mafia gang, invitations to a luxury weekend in St. Moritz followed and the stolen paintings were finally returned thanks to a faked deal worth millions.

In unspectacular everyday scenes we observe three groups, their dynamics and moods over the course of a day.

It's 10:47 pm on a bus somewhere in a city. A few teenagers are listening to music and talking loudly. The other passengers look languidly out the window or at their cell phones. A drunk man gets in and joins the teenagers; the mood starts to shift.

There is a house in the mountains of Graubünden. The mother is dead, the daughter arrives, then the granddaughter. They want to clear out the house—but inside, they sense the presence of the dead woman's secret companions. In addition to a silent hunter and an intrusive chiropodist, another figure seems to have found its place in the woman's life, telling her story from heaven: "S'Tuntschi vo Juf," the doll that came to life from the mountain legend of "Sennentuntschi."