My Boss, My High School Enemy

Lee Suzy was the most popular student in her high school. After graduation, she tasted the harsh realities of the world and, after enduring all kinds of hardships, finally succeeded in getting a job at Hanseon Advertising Agency. But for some reason, Kang Yuna— the model student who was bullied by Suzy back in high school— joins the company as Soo-ji's direct supervisor. And so, Suzy's ordeal of "retribution for one's past wrongs" begins...