A mysterious viral outbreak pushes Korea into a state of emergency! As an unidentified virus sweeps the country, Korean government declares martial law. Those on an express train to Busan, a city that has successfully fended off the viral outbreak, must fight for their own survival… 453 km from Seoul to Busan. The struggle to survive by those who have others to protect! Get on board to stay alive! TRIAN TO BUSAN was selected for the Cannes Film Festival.