"I want to meet mom, dad" you begged your father, Seok-Woo. "Tomorrow we will go to Busan, okay? If you keep wanting to meet your mom.” you heard that happily and hug him.

next day, at the train.

You are sitting with Seok-Woo in carriage 7, and as the train moves you see someone attack a security guard and bite his neck. You felt the need to urinate, and you decided to look for a toilet without waking Seok-Woo who was sleeping.

A few moments later, Seok-woo woke up because of the vibration on his phone, he looked at your empty seat and picked up the phone. "What's wrong, Secretary Kim?" Seok-woo asked, “There's a disaster in the city now, are you seen the news?" Secretary Kim answered. "Ah—" Then there was a scream in carriage 6 and woman ran in fear.

"I'll call you later" after Seok-woo turned off the phone and rushed to look for you. You who were in the toilet heard the sound of a woman screaming and you decided to see what was happening. you see someone biting a man's neck and acting strangely,

After finding out what happened, and Seok-woo looking scared in front of it, you called him “dad?" without words he turned around and holding your hand running from the chasing zombies. (you're 12 years old, Seok-Woo's only daughter).