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.

Rebellious Ki-soo from North Korea is mesmerized by tap dance in prison camps. Ki-soo joins as a team member of a dance team named 'Swing Kids'. Yet suddenly, their dreams about dancing in prison camps are put in danger.

Ju-young is a young woman with a hearing impediment who decides to investigate her sister's inexplicable disappearance, last seen in her apartment. Feeling more and more cornered, Ju-young begins to hear strange sounds and sense an evil presence in the apartment.

Se-jin, a high school student, becomes pregnant and gets ostracized by her family and school. While wandering the streets, she meets Joo-yeong, an experienced runaway, and tries to get an abortion with Joo-yeong's help.

Hye-jeong, who lost her husband in an industrial accident, moves into a sparky new town apartment 'Dream Palace'. But things go awry, construction defect occurs in her unit, and to catch up the repairment fee, she joins the discount promotion act of the apartment. But her neighbors ostracize her for devaluing the apartment, and to protect the unit she purchased as the exchange on her husband’s life, she dives into the demo once more.

Two guys who are working for cartels as cleaners get a request to monitor an 11-year-old kidnapped girl, but the situation gets worse when their supervisor gets killed.

In the dead of night, a body donated for organ transplants mysteriously disintegrates into ashes. Soon after, five recipients, given a heart, corneas, lungs, liver, and kidneys, begin to develop supernatural powers. A teenage girl gains immense strength, a hipster manipulates electromagnetic waves, a novelist summons powerful gusts, a factory manager can heal others, and a woman discovers a strange, still-unidentified ability. Together, they form a reluctant but heroic team known as "HI-FIVE." But they aren't the only ones transformed. A cult leader who received the donor’s pancreas gains the terrifying power to drain life energy and sets his sights on stealing the abilities of HI-FIVE to achieve godlike domination.