The Medousa Virus is causing a global panic as it poses a serious threat to the survival of humanity. Out of 160 individuals, Kasumi was selected to undergo cryogenic freezing until a cure could be developed. However, upon awakening, she discovers that the facility has been taken over by aggressive monsters and dangerous vines. Kasumi is forced to join forces with six others in a desperate bid to survive the complex maze of horrors. The looming question on everyone's minds is, even if they manage to live through this ordeal, how much longer will they have left to live?