This drama is not a campus drama for teenagers, but a workplace drama for all of us. Unlike previous campus dramas that peek into schools and teachers from outside the school, this drama will directly hit the explicit truth inside the campus that we are not familiar with. Seo Hyun-jin plays the role of Gao Hena, a temporary teacher at a private school. As a rookie teacher with no qualifications, she entered Daechi-dong Private High School, which is famous for its excellent teaching. She was considered an airborne soldier and a liar, and thus took the first step in social life. Luo Meilan plays Park Sung-soon, the director of the school's admissions department. She is a "mad dog" with superior skills in front of students, and a "workaholic" in the typical strong woman series. She is the admissions officer of Daechi-dong School.