When a zombie virus pushes Korea into a state of emergency, those trapped on an express train to Busan must fight for their own survival.

Ja-yoon is a high school student who struggles with memory loss after she endured some unknown trauma during her childhood. While trying to uncover the truth, she is unwittingly dragged into a world of crime and finds herself on a journey that will awaken many secrets hidden deep within.

Woo-chul used to be a successful boxer, but he had to go to prison because his opponent died in the middle of a match. Now that he’s been released, he intends to become a model citizen. Meanwhile, his friend Do-shik will do whatever it takes to get ahead. After choosing different paths, they will be forced to plot against and betray one another.

A son to a high-ranked official in North Korea commits a series of murders going across the countries around the world. The movie depicts the following events as South Korea, North Korea and Interpol start chasing down after him.

In 1992, Min-young, a member of the university protest music group Wildflower Sound, joins forces with the ideological study circle Flag to support workers at Samhyung Industries, who are striking after going six months without pay. On the day of the strike, riot police launch a violent crackdown. Workers and student musicians alike are beaten and dragged away. In response, fellow students form a resistance line to rescue them. The standoff escalates into a massive clash between citizens and police—broadcast live on national news. Compelled by something greater, Min-young steps onto the stage and cries out: "We are not rioters!" A roar of unified voices rises and echoes across the nation. “Arise, you who live—The day is coming!”