Choi Seunghyun is your typical high school genius that excels in whatever he does effortlessly.The only person Seunghyun has ever revolved himself around with is his childhood friend Lee Jieun. Unfortunately, Lee Jieun is an idiot.

She is only skilled at baking and being oblivious.

Seunghyun does everything to catch Jieun's attention. If she thinks shaved eyebrows is in style, he will shave his eyebrows; if Jieun likes a movie, Seunghyun will try his hardest to like it too. Yet, the girl he longs for never seems to notice his efforts!

So one day, Seunghyun joins Big Bang, a group filled with wannabe gangsters that love to wreck havoc and hearts.