Ludwig Maria Pohl, aka Lupo, goes rather unnoticed by his inspector colleagues at the Weimar police station. This changes overnight when he becomes the target of a bombing and a deadly ricin poisoning is detected. Lupo only has two days left to live. Kira Dorn and Lessing have to find his murderer. Surprisingly they discover that Lupo is the son of a recently deceased owner of a traditional Thuringian porcelain manufacturer. Up until now, this fact was unbeknownst to anyone. Lupo is therefore entitled to one third of the considerable inheritance - much to the disdain of his “new“ sisters Amelie and Desiree Scholder. Both women have a motive for murder. Doomed to die and desperate, Lupo takes the superintendent of the station Kurt Stich hostage in order to force the inspectors Dorn and Lessing to hand over his murderer. The investigation heats up.