All movies starring Jung Yu-mi

It's little Su-an's birthday. The girl lives with her father in Seoul and really wants to go to her mother in Busan. On the way, the unexpected happens and a mysterious virus strikes the country. Passengers on the train to Busan, the only city that has repelled the virus attacks, will have to fight for survival. 442 kilometers into the journey. Welcome aboard and remember, in this race, it's not enough to survive to stay human.