Yeonjun has had heterochromia since childhood. One of his eyes is brown and slightly green, which is why he suffers all his life because of the eternal glances of passers-by, because of people’s rude questions and because of other people’s reactions to him. This is why Yeonjun hates himself and doesn’t look in the mirror.

Yeonjun lives in an apartment and hardly leaves the house. He works at home and gets paid. One day, a new neighbor moves into his apartment complex, a young guy.