Lee Sungmin is not a people person. However, he is surrounded by the habit-infested people during his college experience. There's people at work, at school, and in his apartment building. Everyday is a long lasting challenge for Sungmin as he tries to ignore people's flaws and skin-crawling habits. However, there's one man he can't ignore. The man has too many flaws that leave Sungmin's eye twitching in disgust. Sungmin hates him, but the man manages to squeeze himself into Sungmin's busy life. And when Sungmin tells him about a deadly call he received a few days earlier, the man is more than willing to help seek out the threatening killer. But Sungmin is more than positive he doesn't want Cho Kyuhyun's help.