Missing and death cases take place in succession along the Korean Demilitarized Zone. South Korea forms a unit led by Captain Jo Jin-Ho and First Lieutenant Shin Yoo-Hwa as assistant leader. They are given only 24 hours to find out the truth behind the incidents. Team members find evidence, but they feel like something isn't right.
Ki-Chul drives his friends out to a resort situated by an abandoned coal mine. His father owns the resort. When they get there, they cross paths with a spooky man who warns them about the coal mine. Later, the friends find themselves in a desperate situation and enter the tunnels of the abandoned coal mine. Will they ever see the light of day again?
A beat cop and his rookie partner investigate a series of killings that seem to be carried out by a mysterious wolfdog.
A pawnbroker is found murdered in a remote town in a derelict building. Three people come under suspicion but all of them have perfect alibis and the investigation comes to a standstill. Almost fifteen years pass and the lead inspector decides to re-investigate.
A fabled painting from royal palace was discovered after 400 years. Once properly restored, it could fetch at least $40 million in the international auction market. Bae is the owner of the gallery which possesses the painting. She scouts top-tier restoration artist Lee to work on the painting. With Lee's expert stroke, the controversy surrounding the painting is slowly unveiled. As the painting's true form is restored, art experts in Korea hold a collective breath. Little do they know that they're only a part of a bigger scheme.
Yu-jeong is suicidal, yet she reluctantly goes to prison for volunteer work. There, she meets a prisoner who is waiting for death penalty. The two quickly fall in love despite their differences, yet they do not have much time.