Shortly after a crowded New York-bound Boeing 747 takes off from Stockholm, a bomb threat is found in one of the aircraft's lavatories. The demands are directed at both the Swedish and US governments. Police Superintendent Alex Recht teams up with the energetic -- and often abrasive -- Eden Lundell from the security service's counter-terrorism unit to deal with the hijacking. Fredrika Bergman, who is currently working at the Justice Department, returns to the police force to act as a liaison between the government and the police. The investigation team soon realizes that the plot behind the hijacking is far more complex than they initially thought. As the hours pass, Fredrika, Alex and Eden are running out of possibilities to save the plane and its passengers. The race against time also becomes a battle against the US government's fear of a new terrorist attack. And the plane is running out of fuel.