Hendery moved to a small neighborhood however you can say he is friends with everyone there despite moving only for a few weeks except for one. People knew that family has a son named xiaojun but he rarely even come out of the house. Even if he did, he never interact with anyone, no one ever heard his voice and people often forget how he looked like. However, every night, Hendery will hear someone sing beautifully and he is addicted to that voice which makes him curious who that voice belong to.