A truck stop near the Autobahn is attacked by two arsonists, who outrun Semir and Tom after a car chase. This isn't the first arson in the area, and it seems that businessman Lehmann wants to buy cheap land for building a new shopping center, by using violent force to put the current residents under pressure.
Real estate businessman Karl Schmidt gets killed, when his helicopter, flown by himself, crashes onto the Autobahn. It soon becomes clear that Schmidt's helicopter was manipulated. Semir and Tom investigate the case. The suspects include former clients, business partners and American managers.
Anna Engelhardt has a new boyfriend: Philipp Klein is a wealthy lawyer who surprises her with a short trip to Paris, France. While driving to a restaurant in their lunch break, the pair's car is attacked by a Jeep, and crashes. Philipp gets shot with Anna's pistol, and Anna gets abducted. Tom and Semir now try to find her, which causes problems with the homicide squad, which is also involved in the investigation.
A soldier dies on the Autobahn, when his truck explodes. Tom has to work alone, because Semir has to lecture in front of female police recruits at the police academy. The investigation inside the the German army confronts Tom with a group of soldiers, who do not tolerate "bad influences" from the outside of their group.
To finance their small racing team, a group of young people steals a brand new Audi A8 and causes a pile up on the Autobahn, leaving Tom and Semir unable to chase the car. When checking the car, the group finds some sensitive documents in it, revealing many cases of massive bribery. Dr. Craven, the owner of the car, wants the documents back, and he uses all means necessary to retrieve them.
Important witness Peter Schmidt and his son Robert are attacked by two killers while driving on the Autobahn. After a heavy crash, Peter is in a coma, and Robert is in serious danger. Tom and Semir decide to look after him.
A truck driver refuses to slow down when he is stopped by police. After a chase, he dies when he crashes into another truck, also killing the other driver. Tom and Semir try to find out why the truck did not stop. Their investigation leads to a group of police officers which blackmails transport companies in order to increase their own income.
Tom stops a speeding car and rescues the driver, before the car explodes. The driver turns out to be Semir, and apparently, Semir just killed his own cousin with the stolen car while drunk. Tom does not believe the facts and investigates. Meanwhile, some gangsters try to kill Semir in hospital.