In every high school, there will always be students who are smart, just like Kim Yooyeon and Yoon Seoyeon... However, they are in the same school, and in each school, only one person can hold the number one spot in academics. Yooyeon and Seoyeon have been rivals since the first day they set foot in school; they compete to be number one. However, they each have their own reasons for doing so. Yooyeon does it to satisfy her parents' wishes, while Seoyeon does it for the sake of her and her sibling's future.

Yunjin and Y/N are dating. Yunjin is cheating, Y/N finds out. Instead of breaking up like normal, Y/N decides to get revenge with the help of a friend of a friend, Nien. Loosely based on the web drama "Romanced"