In Regensburg, a bank is robbed in quick succession, a garage containing a dead man is blown up, and the blood-smeared sports bag of twelve-year-old Moritz Kienle is found. Through targeted investigation by Ellen Lucas and her team, it quickly becomes clear that all three incidents are related. In the garage, which turns out to be a drug lab for crystal meth, not only a charred corpse is recovered. You can also find banknotes from the robbery. The investigation leads Commissioner Lucas to Robert Kienle, the tenant of the garage, who is initially untraceable. Is he the dead body that was found? Inspector Alex Eggert researches Sophie Kienle, Moritz's mother.
Like many of her neighbors, Sophie Kienle became addicted to crystal meth and had to leave her son to the child's father, Robert Kienle. After taking crystal meth, Kienle came up with the idea of making the drug himself and selling it in small quantities in order to save the family from increasing poverty. Drug dealing destroyed the entire family and their future together. The investigations are expanded because there is still no trace of Moritz. Then Lucas' suspicions are confirmed: the dead man in the garage is not Kienle, but probably his business partner Potthast.
Did Kienle kill him? And what did they use the money from the bank robberies for? A hot lead leads to the Czech border area, where Inspector Lucas and her team have to delve deeper and deeper into Mafia-like structures in order to finally apprehend the perpetrator.

Murder or Suicide? A girl falls off a highway bridge at night, directly onto a couple's parked car. The team led by Ellen Lucas routinely takes on the investigation. Forensic medicine quickly delivers the first results. Everything indicates that the dead person must have been in the adjacent forest beforehand. The investigations lead Ellen Lucas and her team to an organic farm in the forest run by Heiko Wolf. Some time ago, Heiko Wolf took in Peter Schwertz and his family. Years ago he and his family had emigrated to remote Canada. Now they are back because his wife Monika could no longer stand the loneliness, but neither could her husband. But even the Ökohof was not a permanent home for the torn family.
Why did the mother go to town alone? And why did Peter Schwertz move into the forest with his two daughters? And why does no one know exactly where they are? The team around Ellen Lucas scours the forest, especially since not even Monika Schwertz knows the whereabouts of her children. And then it becomes clear: the dead person is 16-year-old Johanna Schwertz. The helpful forester Henning Niemeyer initially seems to be a great support in the search - until he gets caught up in false statements. What relationship did Heiko Wolf have to Johanna? And did the handicapped boy Hans, son of the local country disco owner, really only watch the lovers? With a great deal of finesse, Inspector Lucas succeeds in apprehending the perpetrator in the forest.