Kyungsoo who was orphaned at the age of 2, finds out he is not human and calls himself creature. When he receives an anonymous letter, he changes schools, meets new people and discovers hidden secrets. He falls in love, but that love itself is danger.  

She is bold, daring and dauntless. He is cold, comanding and impudent. According to physics they repel each other, but will reality prove science wrong, or not.