For some unknown reason, Kang Soo-Hyun, decides to break up with her Boyfriend. Only, he doesn't want to let her go. That-- and the fact that she can't fathom the thought of breaking his heart. 

That's when Oh Sehun comes in. The well-known heartbreaker of Sarang Academy, who has God-like features as a face, an overflowing amount of ego and presumably the answer to Soo-Hyun's problems.

With the help of Sehun, will Soo-hyun finally get the formula she so badly wanted?