A routine commute becomes a desperate fight for survival in this pulse-pounding South Korean thriller. Fund manager Seok-woo, played by Gong Yoo, boards a train to Busan with his young daughter Su-an (Kim Su An), hoping to mend their strained relationship. Their journey is violently interrupted when a mysterious and terrifying outbreak engulfs the country, turning people into ravenous zombies. Trapped on the speeding train with a horde of the infected, Seok-woo must ally with a diverse group of passengers, including a tough working-class husband (Ma Dong Seok) and his pregnant wife (Jung Yu Mi), to protect his child. As the undead breach car after car, the survivors face not only the relentless monsters outside but also the dangerous selfishness and panic erupting within their own ranks. Directed by Yeon Sang Ho, this claustrophobic and emotionally charged horror film masterfully transforms a simple journey into a harrowing race against time, where every stop could be their last.