Three years have passed since Sonja staged her own death and took over the Major's identity. Sonja and Lukas run the business from Oslo, but an unexpected setback makes Sonja think again and in Stockholm something awaits that can buy them out of their criminal existence for good. Klara, Gustav, Linus and Nina have moved on with their lives, but in different ways they are drawn to Sonja as soon as she returns to Sweden.