Ranie Oleen Nach, also known as NYX, is a master assassin who kills people without leaving a trace. One day, NYX was proclaimed dead without a trace, leaving three questions unanswered: when, why, and how did she die? Dhruv Ugo Mace is a former police officer who is haunted by the memories of his first love, Ranie Oleen Nach. Dhruv is still suspicious of her death as the evidence gathered was insufficient to declare her death as natural. But just as he was about to give up looking for her, a mysterious lady applied to be his secretary, and he sees his first love in the woman but believes it's impossible, but what if they're the same person?