An expelled boxing champion, who now is a high-school teacher, witnesses intolerable violence and throws her first punch to build justice against it, while putting on a mask.

• Studio N
• Oscar 10 Studio
• Shin Hye-sun
• Lee Jun-young
• Park Jung-woo
• Park Hyeok-kwon
• Cha Chung-hwa
• Lee Chan-hyeong
• Bae Hyeon-jun
• Cha Woo-min