Donghyuck used to be a very attractive boy in his childhood but as he experienced hardships and his puberty arrived late he found himself to be the very epitome of an ugly duckling. Now in high school, Donghyuck’s life is very normal and ordinary, boring to say at the least. Or he thinks it is until his old childhood friend and first love, Mark, comes back to Korea and says he wants to meet up with him. Embarrassed at the fact that Mark only remembers him as this pretty boy, Donghyuck sends his friend Jaemin in his place instead of him, thinking that that’ll be the last time he’ll see Mark. Donghyuck thinks his life will be back to its normal boring routine until Mark shows up as the new transfer student at his high school.