Brave Citizen

“Purring in the face of injustice.”

Someone in a mask keeps showing up wherever the school's bullying is worst, and nobody can say who it is. The answer is So Si-min (Shin Hae-sun), a substitute teacher and once a boxing champion until she was expelled from the sport. Park Jin-pyo sets her against Han Su-gang (Lee Jun-young), the student whose cruelty she cannot stand to watch, and she keeps her gloves wrapped and her face covered.