Johan is a two-fisted Göteborg cop who finds himself in a shoot-out with jewel robbers. After the smoke has cleared, one robber, shot by his accomplice, and an innocent bystander, are dead. Three witnesses, including Helen, identify thug extraordinaire Leo Gaut as being the dead crook's trigger-happy colleague. Gaut soon threatens the three witnesses, and only Johan, the badge-wearing hero, can save them.
After causing a commotion with his last assignment, Falk has been given a desk job, which hardly agrees with his personality, and he ends up accepting an offer from an old friend to buy into a private investigation agency. Another friend of Falk's, Sven, purchased a business in Estonia, and when local gangsters attempted to pressure him into paying protection money, Sven retained the services of Nikolaus Lehmann, a burly private eye, to throw them off his trail. However, Lehmann does his job all too well, murdering the racketeers, and then threatening Sven and his family. With no where else to turn, Sven asks Falk to help him deal with the crazed Lehmann; Falk agrees, but soon realizes he's dealing with a more dangerous man than he imagined when Lehmann kidnaps Falk's wife Jeanette, and then releases her with a time bomb locked around her neck, demanding that Falk hands over ownership of his detective agency to Lehmann.
In The Hague, Holland, the new chief of Europol, Sellberg, broadcasts a tough speech against the third wave of crimes in Europe, promising to suffocate the schemes of powerful criminals. He invites his former detective and friend Johan Falk for a meeting, with the intention to join him to his team. Meanwhile, the executive Rebecca accidentally opens one correspondence of her mate, Kane, and finds that he launders illegal money for European mobsters. When she decides to disclose her discoveries to Europol, her life is jeopardized by the associates of her boy-friend, but Rebecca is rescued by Johan, and they have to fight against the organized crime to save their lives and Johan's family.
John Falk is on a routine mission with the Gothenburg police special unit GSI. With the help of a Norwegian undercover police and a civilian infiltrator in one of Gothenburg's heaviest criminal gangs, the GSI are trying buy six assault rifles and thus get them off the street. But suddenly everything changes when a new unknown player suddenly and immediately wants to buy not only those weapons but even more, including armor-piercing shells.GSI realizes that this can not be any ordinary robbers. Someone will start a war on the streets of Gothenburg. At the same time as the situation gets more and more complicated for John Falk's infiltrator Frank Wagner when the leader of the gang he infiltrated realize that one of his own leaking to the police
Johan Falk and his colleagues at Gothenburg police elite unit GSI is in the middle of a raid confiscating Estonian amphetamine when they suddenly realize they have a mythical leader of the Russian mafia to deal with. Few have seen him and even fewer know what his name is. He is only known as "Mr. K". Johan's infiltrator in Gothenburg gangs, Frank Wagner, sends out the message that he wants to do business with someone who can deliver large quantities of pure amphetamine. And suddenly France is in his worst nightmare ever, when he realizes that he is infiltrating Europe's most dangerous Mafia, the Russian-est, consisting of ex - KGB officers
A violent pub war has broken out in Gothenburg, and when a restaurant owner's car explods outside a primary school, GSI's director Patrik Agrell thinks the criminals crossed a line, especially since he just left his children in the same school. When Patrick's colleague Johan Falk realizes that one of the restaurants who have been subjected to threats is owned by a certain Leo Gaut, a gangster who John put behind bars ten years ago (in the film ZERO TOLERANCE), he resumes his contact with the now law-abiding Leo for more information.It is the
GSI is mandated to reveal a trafficking network, elsewhere Loading young Eastern European women to Gothenburg, where waiting them a living as prostitutes. Johan Falk recruit a young Polish girl to infiltrate the network, but the situation becometh strong tapered when Johan and his people moving itself further into the moral gray area than ever before.
It's been two years since John Falk and Frank Wagner broke their cooperation and Frank ended up as undercover for the police. Frank has just had the opening of his bar when his ex-girlfriend's brother Kevin get into trouble because of gambling debts. At the same time John and GSI Group, together with the German police, try to bring down an unusually ruthless gang selling a new type of drug that is hard on young people. Frank's search for Kevin crosses Johan's investigation and opens up a new collaboration between them.
It's a beautiful day in Slottsskogen, Göteborg idyllic city park, when suddenly the unthinkable happens - gunfire amidst all people. Two gangsters shooting game against each other and a large police operation starts. The conflict grows rapidly to involve several gangs from Gothenburg underworld. GSI switched to try to identify a new thread which proves to be both larger and better armed than any other. The only clue is a tattoo on one of the killed gang members. Johan Falk and his colleagues at GSI soon realizes that the flare-up gangster war grows to their most dangerous and violent event ever.
Some men force their way into the home of retired chief engineer Arthur Jönsson. They look through the house for a few drawings. Some time later the same men, who turns out to be former Swedish military, commit a robbery. Johan Falk and his colleagues at GSI get an uneasy feeling that the robbery is just an exercise for a much larger robbery. A robbery, as it turns out, will make all the other robberies in police history fade by comparison.
Johan Falk's stepdaughter Nina has finally got in better contact with her biological father contractor Orjan. But Orjan is flawed. He is in debt to an Estonian construction company involved in a municipal construction project in Göteborg. This results in Nina being kidnapped. What the kidnappers not counted on is Nina's step-father is a police officer. Johan and GSI's involvement creates a snowball effect that leads up to the top tier of northern Europe's most dangerous mafia, the Russian-Estonia Karayan Organization, a mob composed of former intelligence officers from the KGB. Karayan decides to resolve the situation in Sweden permanently. For Johan, this will be his life's most personal journey into the underworld of Göteborg.
A youth gang specializes in robbing security guards at shopping centers in Göteborg. Police call them "Nude robbers" because they force the guards to strip before they make off with the cash in security bags. A robbery goes awry when an innocent passerby gets killed while the dye ampoules in bags explode. Now, the gang's young leader Ricky must quickly get the money laundered, before he must pay the criminal mastermind who sold him the robbery instructions. Johan Falk and his colleagues at GSI heighten their search and contact their informants to try to find out who committed the robberies and who is the mastermind behind everything. Meanwhile Frank Wagner returns to Göteborg to finally settle with Seth Rydell.
Frank Wagner is sleeping with his family in the apartment in Göteborg. All their personal belongings are unpacked in moving boxes. The contract was his life's dream, the bistro on the French coast, lies on the kitchen table along with the backpack with all the money he saved up over the years as undercover for the police. Suddenly breaking a group of heavily armed men into the apartment. Frank responds quickly and manages to escape with his family, home to the only person he can trust: Johan Falk. While wondering if it may be so bad that the worst nightmare is now here, to Frank cooperation with the police finally revealed, as is further attacks in Göteborg against both crime bosses and police officers ... JOHAN FALK - codename: LISA is the exciting resolution of Frank Wagner and Johan Falk's cooperation.