A plane is hijacked while travelling between Stockholm and San Francisco. An investigator for the ministry of justice discovers a connection between a renowned police officer and the co-pilot. In Swedish.
Alex convinces his son to turn the plane around. Fredrika meets a detained professor, whose release from custody is one of the hijackers' demands.
Despite his earlier suspicions, Erik asks Osman to help investigate the cargo hold, though is unsure how much he can trust the aircraft technician. Fredrika's doubts about Saïd's guilt grow. Karim takes a crucial step, further isolating himself.
Erik and Osman try to take action without the passengers noticing. While Alex hunts for Karim's family, Fredrika's investigation is taking a bizarre turn.
Eden pleads with Bruce to get his superiors to reconsider their decision, as the hunt for Karim's family has become more urgent. Meanwhile, dangerous secrets contained in Eden's past are coming to light
Alex fails in his attempt to negotiate for the freedom of a hostage. Meanwhile, Fredrika discovers vital facts about the relationships between the hijackers and others. The plane is running out of fuel. Can it be landed safely?
