Nowadays the MBTI is a very popular personality test in a bunch of countries like South Korea, this categorizes each person in a certain group corresponding to the way they think, feel and express their emotions. This takes us to a secondary school where the most popular and handsome guy “Jaehyuk”, who is actually totally an introverted with difficulties to understand how popular he is and how others see him, develops a crush on a quiet and strange girl of the same class. The problem arises when Jaehyuk starts causing misunderstandings and awkward situations because of his introverted personality while at the same time his crush doesn’t understand why the most popular guy in school is trying to approach her. What is going to happen between these two? Are they going to be able to go past their personalities to have a normal conversation? Will Jaehyuk be able to confess his feelings?