The drama revolves around a woman who can foresee unfortunate events that will happen to other people through her dreams. On the other hand, the prosecutor will do everything in his powers to prevent the woman’s dreams from turning into a reality. Nam Hong Joo (Suzy) is an unemployed journalist who lives with her mother and puts little energy into trying to find gainful employment. Instead, she spends her time admiring and fangirling for Jung Jae Chan (Lee Jong Suk), a rookie prosecutor who is a rising star in the legal profession. But when Hong Joo starts having dreams that foretell bad events that will happen in the immediate future, she turns to Jae Chan for help. Despite being annoyed by the pesky Hong Joo, Jae Chan has no choice but to do everything in his power to these prevent events things from happening.