On May 9th, a female high school student was brutally murdered. There are 7 suspects and 7 shadows that terrorize them. Who are they and which one of them is you?

What if a marriage bureau existed in 1930s in Gyeongseong? It was a chaotic period when Western culture and the concept of romantic and liberal relationship flushed in. This drama was produced based on the fact that the modern men and women’s biggest problem was having a relationship. It started with the thought of what if a marriage bureau that satisfies romantic relationship as well as marriage conditions

A poor North Korean fisherman finds himself an accidental defector, and is groomed to be a spy by an ambitious South Korean military officer.

In a tranquil countryside hospital, radiologic technician Yeon-woo suffers from a mental disorder, the result of a childhood trauma in which he witnessed his younger brother die in a car accident. Won-hee, the hospital’s newest nurse, shows an interest in Yeon-woo, but he doesn’t appreciate her advances-he doesn’t even get along with hospital colleagues he’s known for years. Through a few chance encounters, they gradually grow closer and he opens up his heart to her. However, Won-hee has a secret that she hasn’t told Yeon-woo, and it appears that their love will never be.

One day, detective Incheol (Jung Chan) visits Wido. The island is high with hopes for redevelopment as it has been designated as a cultural tourism trial site. Incheol was dispatched to the island to determine the cause of Jong-gu's death who is thought to have been killed in a landslide. But from the first day of his arrival, the islanders' behavior struck Incheol as strange. They wanted him to quietly conclude the case and leave. Incheol, who would even accept dirty money to treat his wife's illness, decides to leave. That night, another case of suicide takes place and Incheol could feel that the residents' bizarre behavior and the series of accidents are not irrelevant. Now, Incheol's investigation reveals the dirty truth the islanders have been hiding.

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.

The story of Jae-seung, who lost his father, a photographer, during the May 18 incident, follows in his father's footsteps and becomes a photographer. The story of the art of photography, conflicts with people, and love.