The Soul Guardians

Sung geun, a physical education teacher, is at risk of losing his job when the school decides it needs an English teacher instead of a PE teacher. Therefore, he starts to devise a plan to change his job as an English teacher.

A boisterous detective goes undercover in a high school in order to befriend the teenage daughter of a notorious gangster.

Tree curer Cheong-a, who dreams of a happy marriage with her fiance, receives a request for tree treatment and visits a high school. Cheong-a meets a mysterious high school girl with a strange aura while she is treating trees and suffers from bad dreams every night thereafter. Then, one day, a box is delivered to her through parcel service. In the worn-out yearbook contained in the box, the face of a male student encircled with a red pen many times as if done by a crazy person catches her eye together with her picture in her high school days… The memory of that day suddenly comes to her. Will the fear that has been suppressing her be identified?

The story follows the lives of two girls living together and their separate love lives as they struggle to find and maintain their new relationships.