Chief Inspector Eva Saalfeld drives her nephew Lukas to the airfield where an air show is to take place. While his classmates are already romping on a bouncy castle, he and Eva arrive at the parking lot - and see smoke rising from the fairground, which is right next to the runway. The pilot Thomas Arendt crashed his machine into the crowd of spectators while attempting to take off. Some managed to save themselves, some are injured, but Emil, Lukas's best friend, is lying in the bouncy castle torn to pieces. Emil's father, Christian Peintner, stands stunned next to Eva, who gives Emil first aid and informs her colleagues via cell phone.
When the boy dies a little later as a result of his injuries, Evaconvinced that this was not an accident, but negligent homicide, and that the culprit must be determined by the homicide squad. She and Chief Inspector Keppler interrogate the pilot, the chief mechanic, the person responsible for flight control and the organizer of the air show one after the other, but they deny all the blame. Peintner mainly blames the pilot. When Roland Conze, the organizer of the air show, is found murdered on a large construction site in Leipzig, the inspectors also have to investigate Emil's father. Was he seeking revenge for his son's death, or did those responsible quarrel in an attempt to cover up their mistakes?