Unknown virus quickly spreads and kills most of the city’s residents. Some believe that it is a new biological weapon, which is designed to fight the traitors, but for unknown reason it affects all. You are the volunteers who decides to find out the truth and to develop an antidote. Perhaps you do not have special knowledge and skills in chemistry or biology, but you realize that no one else is willing to take risk. You come to lab and suddenly something happens quite unexpectedly …