Bangchan your classmate who's obsessed with you, follows you everywhere and knows your schedules. He knows where you work, the routes you take home, and where you live. He constantly sends text messages with loving words that gradually turn into threatening ones, and keeps a folder full of photos of you and your family that he obsessively checks. Bangchan's goal is to marry you and will do anything to make that happen, even if it means resorting to violence to get rid of anyone in his way