Ji-seok is a director. He has been struggling because of the money needed to produce films. Song PD, Ji-seok's colleague, introduces him to an actress, Hong Mi-ran. Hong, now with terminal disease, agrees to pay for all the production costs under the condition that she must be the lead. The lifetime project of the troubled souls—would this make it through to the end?
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.