Hamilton walks trough the streets of Stockholm, on the lookout for several persons. A series of explosions goes off in what seems like a terrorist attack.
The terrorists of the attack flee through the woods. Hamilton arrives in Sweden after his mission. His arrival is monitored by Kristin Ek. In the meantime DG has made some arrangements after his visit to Russia.
Hamilton and Kristin arrive in Hamburg to help BND in the hunt for the terrorists. Astrid investigates Elena's death. DG finds out that Hamilton is a double agent working for the CIA.
Haig gives Hamilton an order he can't possibly execute. Kristin gets into trouble privately when marriage breaks in the joints. Hamilton and Sonja head off to her cabin and can finally relax, but a surprise awaits.
Hamilton tracks down Sonja to tell her the truth. Their meeting is cut short however when the police brings her in for questioning. Birger helps Hamilton dig up evidence of Haig lying about his mission.
In order to find the intel which Borisov passed on to Norling before his death, Hamilton travels to Ukraine, unknowing that Haig has hired assassins for the same goal.
Hamilton is betrayed by Tarabasov just as Stockholm is struck by a new, massive cyber-attack. The country's media is spammed by prefabricated articles about terrorist attacks that have not happened yet.
