You did it. You finally did it. You're so pretty, you're so popular, everyone wants to be you, or be with you. You have good grades, thousands of guys on your feet, friends... And enemies.

One of your enemies, or as you like to call her, the snake, made a ritual. She summoned a demon, Yeonjun and told him to torment you forever. But... She was very unpolite with him. And he disliked that very much.

He decided that he was going to stick to you forever. But instead of tormenting you, he would help you. But first, he was going to make you sweat in fear a little.

At midnight, you feel something creeping on the dark. Under the moonlight, you see a sight that almost stops your heart. You close your eyes, and hope it's just your imagination. But you hear something creeping on behind... You're terrified.