Detective Bettina Boll receives a strange call in the middle of the night. A doctor, whose friend has gone missing while hiking in the Palatinate winter forest, has discovered a suspicious bone in the Saupferch. Does it belong to a human? Bettina Boll, who is once again being harassed by her superior, senses a hot lead and begins to ask questions. Have there been any missing persons in recent years? No. Any scandals? Well, apparently neo-Nazis want to set up a training center here, which does not sit well with the residents of Bad Dürkheim. Then there's the missing hiker, and unofficially, a Macedonian illegal worker seems to have vanished without a trace. Meanwhile, the risk-loving pianist Bela clearly has something to hide. And then the lab results show that the samples from the wild boar enclosure contain bones from two different individuals.