[PART 1] Frantically searching since two weeks their hiker son Niko (15), separated parents Christoph and Julia Treberist drive off a mountain road onto a cliff. Andreas saves them just before it crashes into a ravine. Tobias is not amused by peter's mayoral intent to charge Andreas for the rescue-lost equipment. Feeling guilty as Niko blames him for the broken wedding due to his lover, Christoph Treber is so determined to keep searching, however hopeless and regardless of dangerous weather, that Andreas ends up agreeing to be 'hired as mountain guide'. On the road, they bump into and team up with Julia Treber and her new partner, Christoph's former best friend Karsten Weidinger. Nico's stepfather. Back in town, Toni is worried by a suicide intent note found by Christoph's sister Miriam Treber.