A strange guest named Jisol, who calls herself an "elf," visits Taeeun, the manager of an amusement park. She asks for her father's heirloom necklace and steals it. At that moment, unidentified people kidnap Taeeun. They claim that Taeeun is a descendant of the minority group "elves" in Korea, particularly revered as descendants of the deity of a sacred mountain among the "elves." They ask Taeeun to help them facilitate the migration of the "elves."