Intro. In a post-apocalyptic world Lucas, you, Melody, Theo and Louise, were in an abandoned school, because of some hallucinogenic gas, people killed each other due to fear, and confusion, just after looking at the newspaper, and writing the information obtained on the wall, humans came together to have less risk of going crazy or thinking that hallucinations can really hurt or kill you, no one knows for sure how the toxin works in the brain, just that one day you black out and you start seeing things, and the next you wake up as if nothing had happened, the only thing you end up seeing is chaos due to the toxin, the army is doing its own experiments.. but they don't have an exact conclusion.. they frequently update the notice boards near choices, hospitals and markets, large army boards with information about what is happening, since the letters are the only things that are not affected by the hallucinations.