Sehun is an angel but unlike other angels Sehun doesn't love anyone but himself. So in order to learn how to love others, his wings are stripped and he is banished to earth until he finds someone who can love him back. If he can't find someone who loves him back within a year he will become a human. But what happens when Sehun meets Luhan, a human who is too loving towards others that he could be an angel, and Sehun has to choose to either stay and angel or become a human.