You're referring to the popular South Korean zombie apocalypse film "Train to Busan"!
The movie begins with Seok-woo (played by Gong Yoo), a divorced father, and his daughter Soo-an (played by Kim Su-an), who are on their way to Busan to visit Soo-an's mother. They board the train, and as it departs, they notice a strange, infected man entering the train. Train To Busan Vegamovies
As the train hurtles through the countryside, the group faces numerous challenges, including hordes of undead, crumbling train cars, and treacherous tunnels. Along the way, they meet other survivors, including a group of high school students on a field trip. You're referring to the popular South Korean zombie
Here's a brief summary:
Released in 2016, "Train to Busan" (also known as "Gongto Busan") is a thrilling and action-packed movie that tells the story of a group of passengers on a train from Seoul to Busan, who find themselves trapped in a zombie outbreak. As the train hurtles through the countryside, the