On the annual day of Sonja's death, her children are attacked and the hunt for the villains begins.

Emil suspects that the attack on the siblings may be linked to his witness. Gustav, Nina and Linus try to find out who is responsible and eventually they get a lead. But what they don't know is that someone else is one step ahead.

As the threat to the siblings grows, a guest from the past shows up at Gustav's house. Nina is forced to work with Barry's dodgy business associates to keep the firm afloat. But something goes wrong.

The only way to try to eliminate the threat seems to be to appease the perpetrator. Emil manages to get the identity of the perpetrator, but in the process of making the arrest, something else catches his attention.

The children are taken to safety and help comes from unexpected quarters. When the perpetrators show their true colors, everything's turned upside down. It's no longer a case of an external threat, it seems to come from within.

Sonja Ek is living a happy and loveful life with her husband and her three children in a suburb outside of Stockholm. Everything changes one day as Sonja is forced to enter the criminal world in order to protect her children.

Barry is at Stein's to get the money, but when Stein doesn't have enough he takes their paintings instead. Lukas watches over the children and Gustav gets a visit from Jill and they end up taking Ecstasy together.

Sonja continues the search for the Major. The police tell Niklas that Sonja is hanging out with Broman. Sonja's search leads her to Norway. Kattis persuades Sonja to go out and celebrate Hanna's birthday at Broman's restaurant.

Sonja lives a new life with John, but worries about her children, who sometimes tend to make bad decisions. Barry does business with the Rosales but the money ends up in the wrong place.

The family is staying at the hospital. Stein is pressed on information regarding the shooting of one of Broman's men. The police conducts a search at the family's house.

Sonja tries to figure out who the Major is. Stein searches for the missing cocaine. Niklas wants Sonja to take care of the Company while he's in jail. Broman demands money from Stein for the stolen cocaine. Linus gets a puppy from Anders.

Nina is missing. Has she ran away or has she been kidnapped? Sonja has told Lukas about what Stein has done and Lukas goes to see him. Broman suspects that Sonja knows who the Major is.

The police have started to watch Sonja 24 hours a day, they know she is hiding things. Sonja and Magdalena manage to fool the police. Kattis puts both Sonja and Stein against the wall. Linus begins to remember.

Sonja and the children are back in Sweden with protected identities. The main witness against Sonja's brother Niklas is brutally murdered. Will she be forced to testify? Their father Anders receives a heavy message.

Dark clouds are gathering. Hanna feels very bad mentally after giving birth. Sonja is frantically searching for Niklas.

Emil pressures Sonja about an unexpected find in the marina. Anders is released in an ankle bracelet. Nina gets unexpected help, and Lukas makes a crucial decision.

Linus and Kasper begin to realise what they have done. Juana receives an unwelcome visit in the shop and Barry and Sonja are forced to go out to help her. Klara wants Lukas released from prison so he can protect the family.

Gustav finds out what has happened to Juana in the worst possible way and calls Sonja because he doesn't know what to do. Barry is exposed to Rosale's displeasure and realizes that there must be a leak among his men.

Sonja realises that she has unknowingly become involved in business with Rosales. Klara uses extreme methods to find out who is really behind the sabotage at the marina and Simon realises he has lost everything.

Much has gone wrong for Sonja, who once again asks Lukas for help. Gustav lands a new job and Linus pays dearly as he tries to take responsibility for what has happened. Emil receives an unexpected offer from Barry.

Word of Sonja's return spreads, with consequences for her new life. As the hunt for her continues, Inspector Emil Svensson issues an ultimatum.

Niklas is released, but pressured hard by Barry. Anders tries to find out who attacked his daughter. Sonja starts working for John again, but one day she stops by the marina.

Nina and Sonja's relationship deteriorates. Sonja finds out who is behind the attempts on her life. Niklas does drug deals and ends up in danger.

While Hanna is in labour, Niklas has disappeared without a trace. Sonja forgets Linus' birthday. Barry tries once again to get his hands on the club Rose.

Sonja is released and reunited with her sons. An unwelcome guest turns up at the memorial service. Drug lord Pinto Rosales issues an ultimatum. Sonja goes on the offensive in the war against Östling.