A period drama that tells the story of the loves, dreams, and ambitions of a woman who lived from the 1970s to the 1990s, an era of great political and economic upheaval in South Korea.
Seo In-ae is determined to do whatever it takes to avenge her murdered mother. She also faces many trials and tribulations while upholding justice and the law in her profession, where she meets important government and military figures. Brothers Han Gwang-hoon and Han Gwang-cheol were her childhood friends. In-ae and Gwang-hoon loved each other, but their ambitions and conflict of interests marred their relationship. On the other hand, Gwang-cheol has always loved In-ae passionately.