Jennie Kim, the student body president of Seoul University. The epitome of beauty and brains and at the same time, the devil incarnate. Thick walls surrounds her heart in fear of being vulnerable to others. Even with that facade, if you'll look closer, you will see the warmth inside her soul. Unfortunately for her, the great Lalisa Manoban who's well known for breaking hearts, was trying to get in her barriers that she built for deacades, without permission because of an incident that brought them closer. Can she stop Lalisa or will she let her? After all, she's all she ever need.