They were bestfriends and they did everything together. She felt heartbroken to find out he disappeared. On their graduation day she seems him but he's gone in a blink of an eye. That night a certain event causes her to lose her parents and be taken in by Namjoon. He teaches her how to defend herself. She is taught to protect herself from anyone who tries to harm her. What happens when Jungkook appears again? How will she react if he tries to kill her? Most importantly, why is she on his blacklist?