Tranferring into a new school took a bit of time to get used to, but you would like to thank the people who made it easier for you. Especially the girl who you came to know when you caught her outside the music room, listening to you play the piano.

What would you do if one second, you're desperately trying to copy your friend's notes and the next thing you know, you're on the run while witnessing way too many horrifying things that only exist in movies? When thrown head first into a full blown Zombie Apocalypse, you noticed that no one is willing to help each other and nothing seemed to matter anymore except surviving. 

That was how Ahn Yujin found herself on one seemingly normal school day. In a situation where people's selfishness, greediness and kindness can change the course of everything, join Yujin as she desperately tries to survive this living nightmare. The only thing that keeps her sane is her.