A retro office comedy depicting the chaotic events that unfold in the late 1990s when Sammo Hung, a 30-year-old elite securities supervisor who only cares about work, goes undercover as a 20-year-old high school graduate employee at a securities firm where suspicious money flows are detected.

As illegal firearms flood into a gun-free South Korea, a resolute cop and a mysterious partner join forces to stop the chaos from sweeping the nation.

Iblis, a genie who awakens after almost a thousand years, and Ka-young, his new impassive master.