20 years ago Moo-Yeom’s father was a suspect in the "Gap Dong” serial murder case. Because of the detectives’ oppressive investigation, Moo-Yeom’s father killed himself. Now, Moo-Yeom is a detective and works to capture the killer Gap Dong. The statue of limitations has expired for the serial murder case and Moo-Yeom resigns to the belief that Gap Dong is dead. New clues though for Gap Dong appears in front of Moo-Yeom and he sets out to catch him once and for all.

A recalcitrant, delinquent teen girl meets a compassionate teacher, who inspires her to alter her path and become a street-savvy neurosurgeon.

The ambitious success stories of 6 people surrounding Prince Lee Bang Won, and the ideological and political conflict between Prince Lee Bang Won and Jung Do Jeon, the man instrumental in helping King Taejo establish the fledgling Joseon nation.

In-ha and Ha-myeong become reporters for different reasons: one aspires to follow in her mother's footsteps and the other seeks to do honest news.