What event happens during the 2016 movie that is directed by Yeon Sang-ho and stars Gong Yoo?
Yeon Sang-ho: Yeon Sang-ho (born 1978) is a South Korean film director and screenwriter. Yeon Sang-ho:  He wrote and directed the animated films "The King of Pigs" (2011) and "The Fake" (2013), and the live-action film "Train to Busan" (2016). Train to Busan: Train to Busan () is a 2016 South Korean zombie apocalypse action thriller film directed by Yeon Sang-ho and starring Gong Yoo, Jung Yu-mi, and Ma Dong-seok.
zombie apocalypse