Noodle shop employees by day and demon hunters by night, the Counters use special abilities to chase down malevolent spirits that prey on humans.

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.

A minister who researches religious cults turns to his Buddhist monk friend for help investigating a new group with mysterious origins.

A police detective from 1986 travels in time to the present to save his daughter.