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.

In the 1990s, when Go gambling fever swept Korea, Gui-su loses everything because his father gambled obsessively until there was nothing left. Left all alone in the world, Gui-su meets a mentor and Go teacher, Il-do, and goes through vicious training to become the grandmaster of Go. He sets out for revenge on the world that destroyed his life, but soon finds himself chased by an unknown loner pursuing his own vendetta.

Son Ji Eun moves to a small city due to her husband's new job as a civil servant. She works part-time at a mart. Son Ji Eun is quiet and sincere. Her life in the small city becomes boring. Son Ji Eun's life is shaken by Yoon Jung Woo. Yoon Jung Woo is a biology teacher at a local school.

The story takes place at a time in Joseon history, when upheaval and power struggles surrounding the throne had reached extreme levels. In order to escape those who plan to assassinate him, the king puts a clown, who looks exactly like him, on the throne.

Ancient Korea, July 4, 1762. The Crown Prince Hyojang, posthumously named Sado, son of King Yeongjo of Joseon, is accused of treason. Thus, the king asks him to commit suicide, but his closest vassals prevent it, so the king orders the prince to get inside a wooden rice chest, where he suffers deprivation of food and water.

A star reporter, a second-rate journalist and a man by the code name "Healer" are brought together by a long-buried incident that hides dark truths.

Despite her poverty and lack of education or connections, bright and plucky Eun Jung-soo works her way up in the luxury handbag industry based on sheer talent alone. She encounters Do Jin-hoo, the smart and handsome chaebol heir of a fashion company, and Kim Seo-hyun who has to hide her true identity in order to achieve her dreams.

Bong Soo loses his memories from an accident, which disables him to recognize his family. Due to this condition, and his ever-increasing odd behaviors, his relationships get mixed up. He treats his wife as his daughter and mistakes her daughter for a friend. Ironically, his friends and family start to accept the situation as they derive some comfort and warmth from it.