Horror master Yeon Sang-ho (Train to Busan) directs a new Korean zombie thriller starring Gianna Jun and Koo Kyo-hwan. Professor Se-jeong (Jun) is thrust into a bloody nightmare when a rapidly mutating virus is released during a biotech conference causing authorities to seal the facility. Trapped inside with no escape, Se-jeong along with a small group of survivors must fight to stay alive while the infected undergo horrific transformations.