Choi Ha-Neul, an average second-year higschooler who is completely in love with animals. But unfortunately, animals hate her. One day, Lee Taemin, an exchange student that has a beastly look came to her school. None of the students dared to talk to him but Ha-Neul sees Taemin as a cute, innocent and average person. The both of them became close really fast, but there's a secret that Taemin keeps..

What is it?