In the clandestine world of assassins, Celine was renowned not only for her lethal skills but also for her unparalleled beauty, which she used as a weapon to eliminate countless targets. Yet, on her most recent mission, her icy resolve began to thaw as she found herself drawn to her target's son, a young man whose innocence and charm ignited a flame within her hardened heart. Under the guise of a student, she infiltrated his school to gather intel, but with each passing day, her feelings for him grew stronger, clouding her judgment and stirring doubts about her mission. However, just as she wrestled with her conflicting emotions, tragedy struck when her beloved little sister, whom she had been protecting, fell victim to her target's machinations. Now torn between love and duty, Celine must decide whether to forsake her own happiness for the greater good or risk everything to save the one she loves, knowing that the consequences could shatter her world forever.