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.
An old man enters a Public Safety Center with an old blanket. He looks for his family. Then his story is unfolded. The period of Japanese colonial rule. Genocide is committed by Japanese soldiers. Protecting the youngest son, the mother covers the boy with a magic blanket and tells him a fairytale so that he does not realize the sad reality they are in.