On her way to the Röder law firm in Berchtesgaden, Munich businesswoman Paola Wagner crashes her convertible on a mountain pass. She was attacked by a drone. When Sophia and Jerry visit the lawyer, Wagner's business partner, Sven Mielow, is waiting for her. He admits to having been in a relationship with Paola in the past and to having been surprised by her desire to leave their joint company.

Karsten Mehring, the manager of the upscale Watzmann retreat, is found dead in his official residence. Stabbed, as Dr. Hartmann determines. Judith Delius and Manu Högl, the center's founders, are devastated but unable to assist Jerry and Sophia with their investigation. The two women seem tense, having risked so much for the retreat. Did this prove fatal for the new manager? Perhaps Elli, Beissl's wife, can shed some light on the matter? Her former assistant at the tourist office, Daniel Kovac, has become one of the prime suspects! Elli can't let it go and begins her own investigation.

Dr. Hartmann summons the investigators to a refrigerated truck. After 15 years, the Blaueis Glacier has released Vroni Gagern's body. Because Jerry immediately notices that the safety rope has been cut, and because rumors have been circulating about the Gagerns' marriage, the police reopen the investigation. Soon, not only is widower Hannes a suspect, because he had an argument with his wife before her last mountain tour, but Eric Wolters, a physiotherapist, also falls under suspicion for medical malpractice. And what is Sebastian Niederegger hiding, whose wife Julia is currently pregnant? While searching for remains on the glacier, Veronika's son Moritz finds his mother's backpack and could shed light on the mystery.

Are ghosts and monsters really dancing out there against the backdrop of the mountains? The next morning, camper Luzia is completely distraught, especially since her partner David has also disappeared. Anna Hinterweger, who happens to be driving by, takes the young woman to the police station, where Sophia and Jerry initially doubt her story because Luzia is clearly under the influence of drugs. But then they find David's body in the woods. The police investigation is inconvenient for farmer Paul Hinterweger, as he fears negative publicity for his planned holiday resort.

Steelworks owner Annette Loibl is horrified – her blind daughter Charlotte has been kidnapped. The investigation focuses on Vroni Ketschauer, who was fired by Annette's partner, Ferdinand Mitterhammer. Sophia goes undercover as a security officer at the Loibl steelworks. She feels sorry for Vroni Ketschauer, a single mother struggling financially and harboring a secret, and is carried away by a rash action… Meanwhile, new colleague Franzi helps the grateful detectives Strasser and Paulsen install a call trace.

Uproar in tranquil Berchtesgaden. A masked man is robbing unsuspecting citizens almost daily. Johanna's newspaper accuses the police of inaction. The owner of the local pub is slapped in the face, especially after a Mr. Pfeifer publicly humiliates him there. The masked man's latest attack ended in bloodshed.

Biologist Valerie Lemke dies after a visit to a glacier. Dr. Hartmann quickly determines that she was pushed into the abyss. Jerry and Sophia investigate among her colleagues. Dr. Magda Hansen was a rival for Professor Gruber's affections, while Christian Wenzel was an environmental activist and a jilted lover. Even pharmaceutical manager Oliver Gross falls under suspicion because Lemke's research on blood algae was commercially lucrative.

The discovery of a young man's body in a wooded area leads Jerry and Sophia to the Heubl farm, where endless party nights have been infuriating the residents for some time. The deceased was DJ Dominik, who shared an infatuation with Ramona Sperr with the orphaned farm owner, Linus.

A rat in the house? Beissl gives Ava an ultimatum: either she locks her rat Nemo in a cage or she has to leave. But before he can finish the fight with his Berlin relative and her furry friend, Jerry delivers another piece of bad news: Quirin Gruber is found dead in his stonemasonry workshop, buried under a massive slab of stone. Dr. Hartmann discovers he was bludgeoned to death.

The internet is down at the Beissl house. Therefore, Johanna has to personally deliver the news of the cabaret artist Kuno Horn's death to her father. He was found bludgeoned to death on a forest path. Beissl is devastated, as he was a fan of Kuno Horn and had tickets for his performance that evening in Berchtesgaden.
Horn's agent, Gaby Hoffmann, and the local promoter, Roman Meiser, are shocked by the cabaret artist's death. But suspiciously quickly, they replace him with the more "popular" comedian, Bast Moor.

Johanna Beissl arrives at her parents' house distraught. Jerry hasn't returned from a canyoning trip during the night. The weather is getting worse, and then comes the devastating news: a body has been found in the gorge.
Mountain guide Lucky, from Jerry's climbing group, has been bludgeoned to death, as Dr. Hartmann is absolutely certain.

Beissl and his wife are quite surprised when Ellis's 15-year-old niece, Ava, suddenly appears at their door from Berlin. In her backpack, she carries not only a pair of headphones but also a few secrets that will soon leave a sour taste in Beissl's mouth and make Johanna an accomplice. When has there ever been a case where one's own colleagues harass a family member for fare evasion? Professionally, the head of the Berchtesgaden police is also confronted with unpleasant memories. Six years ago, he was the first officer on the scene of a bank robbery – and he didn't exactly cover himself in glory.
Now, one of the bank robbers, Martin Zimmermann, has been murdered in the Böcklmoos moor, shortly after his release from prison. His accomplice, Vitus Neubert, was never caught, and the stolen money was never recovered.