往日无足可惜  昨天一切都很好 The Fault Is Not Yours 얘들아, 너희가 나쁜게 아니야

Minjae is a highschool teacher during the day, but at dusk, he goes out on the streets and join with youth who are alienated from school and home. Due to an incident, Minjae is put to the test again to protect his students ─ Jigeun and classmates.