Byung Do, his brother who lives like a scoundrel and was close to detective Kang Pil comes back after being stabbed by 'Submarine' ten years ago. A contractor on Jeju suggests that if there's someone who wants to find someone, one can earn a lot and so, Kang Pil who was financially challenged accepts the requests and heads to Jeju island. However, there are many suspicious things about the missing director who the contractor wants to find. There was a situation in which he was involved in "win-win manipulation" in the K3 League and even arranged "sex trafficking" for undergraduates in junior soccer classes. And the more they investigate, the more secrets are being revealed...

Na Kyung-soo, a diver, is angered to learn that the Coast Guard is assigning responsibility for the death of a fellow diver during the Sewol ferry disaster recovery to Ryu Chang-dae, the representative of civilian divers, and charging him with manslaughter.

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.