The year is 1986 and you are an employee of the Chernobyl nuclear plant before the disaster. The last you remember is a big explosion, a splitting headache and being sent to the floor. You are resuscitated by a strange man in a hazmat suit and goggles. "Comrade! You return from the dead. My name is Valeri, friend" He hands you a gas mask, a torch and a geiger counter "We need to return to the surface, comrade"