Your name is Sandy. You have a six-year-old, daughter, Kitty. You are Taking the trian to Busan today.
It's going to be a long way to Busan. You fell asleep deeply.
All of a sudden, you are woken up by the screams in the carriage and find out your daughter Kitty was missing.
There was a chaos in the car.
A bloody conductor is running around. He grabs every passenger he can reach and bites them.
"RUN" is the only thing you can think of now. But where is Kitty?