A retro office comedy that depicts the events that unfold when Hong Geum Bo, a 35-year-old elite securities supervisor who only knows work in the late 1990s, a time when the country was in turmoil due to the IMF, uses her natural 'youthful looks' to get a job undercover as a 20-year-old high school graduate female employee at a securities firm where a suspicious flow of funds has been detected.