A rookie English teacher named Han Gi-tak goes into Byulli Island, a rural island village, to look for a easy money job that will satisfy his resume. Together with experienced math lecturer Jeong Seok of three years, they teach special children who are a challenge.

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.

In 1999, a teen girl keeps close tabs on a boy in school on behalf of her deeply smitten best friend – then she gets swept up in a love story of her own.