Dahyun's dream is to be a successful korean idol. She never cared for anything or anyone else, she just wants to learn, improve and be successful. She knew that the pathway to debut is a hard one, but she never really cared because she knew that she will get over with every obstacle that she will encounter; not until she meets Taehyung, a mischievous boy who adds color to her dull personality. 

Taehyung's dream is just like Dahyun's. However, he is a mischievous boy who wants to have fun instead of just being serious. He is passionate in everything he wants to do, but he is careless with everything he doesn't want to do-- which is actually not an ideal perspective if one wants to achieve his dreams. He then meets Dahyun, who is a very passionate student-- but a very blunt, serious and no-fun one. 

Just like the north and south pole, their opposite personalities will eventually match. A friendship between them, grows and love develops-- however, debuting and having a relationship cannot be taken together. 

What will happen to the both of them? How did will their personalities match? Will they debut at the same time? Is the love that's developing between them, a mutual feeling, or a one-sided one?