Yuri Sadao was just a bored college student with a fascination with urban exploration, but found himself snooping in the wrong place when he and his friends found their way inside the decade old ruins of a research facility and were exposed to the creatures buried inside.
Currently Yuri is one of many civilians infected with an extraterrestrial brain worm that mutates the body and turns their victims into ravenous beasts with a soul desire to eat and spread the infection.