metanoia (n.) the journey of changing one's mind, heart, self, or way of life.

When the students of Seoul High School were back to school, Song Minhee has a mission which is to achieve her dream by entering a prestigue university.

But, to enter the university of her choice, she needs a perfect score in every examination and get first place among the third year students.

However, 

there was a rumored guy who happen to be a deliquent group member called BTS, that always got the first place spot, leaving Minhee in second place.

Her life change when the guy named Jeon Jungkook suddenly took interest in her.