Ji-won, a short-term teacher at a public high school, goes to a private high school job interview at lunchtime. She happens to meet her high school teacher, Jung-man, on her arrival.

Replaceable

So-Jin, who is training for the physical fitness test for police recruitment, is being stalked by a man, but she cannot find a strong means of confronting the situation. Meanwhile, Hyeon-Sook, who lives in the same apartment complex of So-jin, cannot get away from her violent husband. They work out in a schoolyard for their own respective reasons.

New Record

Sun-ah, who returned to college after a year, visits a club for the professor's uncomfortable request.

Finding Haemi

The story of a lesbian, Jin-ah, who teaches a film production class at the local community center. During her first class, she meets her former high school teacher Seo-in and gets lost in old memories.