Veteran analyst In Ho gets a report from a man about a plane psychological oppressor assault. While researching, he figures out that the suspect boarded the KI501. Notwithstanding his fear of planes, Jae Hyuk chooses to go to Hawaii for his little girl. At the air terminal, Jae Hyuk is diverted by a dubious man with a compromising tone strolling around. The KI501 flight leaves Incheon Air terminal and heads for Hawaii, however soon a man passes on for an obscure explanation, and the circumstance of dread and disarray spreads on the plane as well as on the ground. After hearing the news, the Priest of Land, Foundation and Transport, Sook Hee, framed a counter-psychological warfare countermeasure base camp and gathered a crisis reaction meeting to figure out how to land the KI501.