Dong Jin is recognized as the best in the field of data mining. The reason he majored in statistics at his university was because of Mi Jung and his wish to help her. Dong Jin and Mi Jung attended the same high school and he had crush on her, but she was called a witch. Since Mi Jung was little, strange things occurred around her like all the guys who liked her died or got injured. 10 years after school graduation, Dong Jin happens to meet Mi Jung again. She has now cut herself off from the world, believing her fate is cursed, but she wants to go out into the world. In hopes of Mi Jung breaking out of her shell, Dong in wants to prove that all these unfortunate incidents are not because of her. To prove his thesis, he investigates all the situations when guys around her got hurt. Risking his life, he finally finds the law of misfortune around her.