Delta wakes up from the explosion and finds that the surrounding area has been overrun by zombies. When she tries to escape from the Institute, she finds a strange girl named Rei and goes to save her. In this game you will find out the truth about the world and lead the survivors to live through this disaster.

Delta wakes up from the explosion and finds that the surrounding area has been overrun by zombies. When she tries to escape from the Institute, she finds a strange girl named Rei and goes to save her. In this game you will find out the truth about the world and lead the survivors to live through this disaster.