what if theirs a miss not so sidekick but a high school version? What if latte isn't just a typical extra And normal past? What if her past is more dark than it seems? What if the male leads isn't just a typical handsome and rich guys than anyone ever thought? Hyejung was the world's most skilled and dangerous assassin who was betrayed by the guy who she thought she could trust, but it turns out that he was a spy. She has also read her favorite romance novel called "The flower of the beast" that she had readen when she was in one of her missions and since then, she had become addicted/obsessed with the novel itself that when she was betrayed and died she had the book in her bag that had fallen with her. What would hyejung do now that she is in her favorite novel? Will her betrayed and broken heart be fixed? Or not? And most of all, Will she finally find her true love?