Gi Mu Hyeok Returns As a Teacher - S1.E2

Destroyed and defamed, Gi Mu Hyeok returns as a teacher and infiltrates Cheonmyung High School to uncover the truth behind Jung Su Ah's death. On his way to school for the start of the semester, he sees Ha So Hyun in an embarrassing situation. Meanwhile, the kids at the school plan a bare-knuckle fight on the rooftop of the school.