Hanna, Björn and Tina now know what Operation Krajina is all about. Mimica's is going to smuggle enormous amounts of heroin into Sweden by ship and mini-submarine. They are informed that Majmun will be the one receiving the drugs, but they don't know where. Christian, who is suffering from panic attacks after Stefan's murder, gets assigned to place a tracker on Majmun's motorbike. But when will it happen? Blanka is in despair over how Stefan was murdered. She discovers something terrible on Davor's computer.