Kline, a former Los Angeles police officer turned private detective, is hired by a powerful pharmaceutical conglomerate boss to investigate in Asia the disappearance of his only son, Shitao, whom he has not seen in person since the boy was ten. Now in his 30s, Shitao has gone missing in the Philippines where he had been helping in an orphanage.

While investigating a terroristic threat that goes viral online, Korean authorities discover that a suspect has recently boarded an international flight bound for the United States. When a healthy passenger on the same flight suddenly dies a gruesome death of unknown cause, panic erupts both in-flight and on the ground. With steadily decreasing fuel and international refusals to offer aid, the captain and crew will be forced to take unprecedented emergency measures in an attempt to save the lives of their passengers.

Though it places his own life in danger, a look-alike commoner secretly takes the place of a poisoned king to save his country from falling into chaos.

A group of unlikely heroes from across the Korean peninsula try to save the day after a volcano erupts on the mythical and majestic Baekdu Mountain.