Baek Hee Sung appears the ideal husband. A hard-working craftsman, his metal-work studio has been successful enough to provide a good life for his wife and daughter. Equally comfortable working around the house or in his workshop, Hee Sung easily fulfills his roles of father, husband, business owner, and craftsman. But this perfect exterior hides some very dark secrets, secrets he would rather his detective wife, Cha Ji Won, never uncovers.
It is hard-hitting homicide detective Cha Ji Won’s job to uncover as many secrets possible in her never-ending quest for the truth. With an insatiable curiosity and unwavering determination, Ji Won lives for her work. Thriving on the excitement of unraveling mysteries and the high that comes with bringing criminals to justice, Ji Won is always in search of that next clue. Taking on a particularly cruel case, she finds herself going down a very dark path - one that could crumble the very foundation of her own happy life. Diving deeper into her investigation, she comes to realize that her dangerous prey has been in her midst all along!