This TV show revolves around Oh Soon Nam, a teacher at a traditional Korean school called Jeokhyeonjae where she nurtures students' aspirations like a friend. Soon Nam is also married to the sole descendant of a head family clan that comes with heavy responsibilities. Then tragedy strikes her. Soon Nam embarks on an investigation to punish the people behind these injustices, and finds that she must choose between revenge and values she has lived by all her life.