Returning with an abnormal captured in the Himalayas, Magnus and Will are stranded from civilization and aid after their plane goes down in a desolate mountain range. While anxiously waiting for a rescue team, the surviving passengers begin to fall victim to vicious and deadly attacks throughout the night. It becomes chillingly apparent that surviving the cold is the least of their worries and no one, not even Magnus and Will, is above suspicion.

While leading a covert meeting in Rome, Magnus encounters an old friend from her past who confides that the cabal has come to exact revenge on her for the events in "Fata Morgana."