Carl Hamilton has just returned to Sweden after many years of secret education in the US when Stockholm is shaken by a series of terrorist attacks. Hamilton is assigned to assist the Swedish intelligence service in their pursuit of the guilty, but at the same time works as a double agent.
Sonja lives a rather carefree life with her beloved family. The husband Frederick's marijuana business providing family finances a silver lining. But life is shattered and Sonja forced to play a dangerous game with both organized crime and police to protect their children. She can no longer be sure which ones are her friends and who she can trust.
Back in prison, Didrik, 33, discovers a new way of expression and happiness through theatre and acting, and starts looking back at his past and upbringing with a sadistic mom and bullying peers.
