Having lost his parents at a young age, Min-woo takes care of his  younger brother Jin-woo much like a father would. He harbors a secret  crush on Shin-ae, a nurse he meets at a church gathering, and persuades  her to go on a date with him to the movies. But not long after the film  begins, they hear the sound of sirens and are rushed out of the theater.  Outside they find chaos in the streets: Tear gas dances wildly and  soldiers mobilized for crowd control have taken to violent beatings.  Bewildered and enraged, the citizens form a militia, determined to protect  the ones they love - and Min-woo finds himself in the middle of it all.