Martial law is declared when a mysterious viral outbreak pushes Korea into a state of emergency. Those on an express train to Busan, a city that has successfully fended off the viral outbreak, must fight for their own survival…

16-year-old juvenile offender Ji-gu reunites with his young mom who he thought was dead, and the two try to make up for their time lost.

Set in the late 15th century during the reign of King Yeonsan, two male street clowns and tightrope walkers, Jangsaeng (Gam Wu-seong) and Gong-gil (Lee Joon-gi), are part of an entertainer troupe. Their manager prostitutes the beautiful Gong-gil to rich customers, and Jangsaeng is sickened by this practice. After Gong-gil kills the manager in defense of Jangsaeng, the pair flee to Seoul, where they form a new group with three other street performers…