Part 4/8:
As the rats continue their rampage, Jung captures a key from a policeman and escapes his confines, now determined to save his family from destruction. Jung finds himself leaping across seats, dodging hordes of rats, and attempting to lead survivors to safety. Amid the chaos, Jung becomes the reluctant hero, struggling to navigate his family's needs alongside the survival of other travelers.
Tragedy strikes when Jung’s young son is bitten, revealing the contagious nature of the attack and creating an urgent need for a cure. Jung, armed with knowledge about an experimental drug housed at a nearby hospital, becomes their only hope for salvation. The stakes rise as the passengers face their mortality and confront their fears, turning the train into a battleground against the vermin.