Korean horror directed by Yeon Sang-ho. The film follows Seok-woo (Gong Yoo), a divorced city trader who is taking his young daughter Su-an (Kim Su-an) to stay with her mother in Busan for her birthday. However, following the sudden outbreak of a deadly virus throughout the country, the carriage of their high-speed train is overrun by a swarm of zombies.

With the train hurtling towards its destination, Seok-woo and Su-an must team up with fellow survivors in a desperate bid to survive the journey.