My name is Theo, and I'm a resident of Oasis, the last habitable area on Earth. It's meant to be a paradise. Vulgarity, violence, insanity, and other ills are but a distant memory, and even death no longer plagues us. I was once content too, but now I hear a voice in my head, and she tells me things no imaginary friend should know. Her name is Phoe, and she is my delusion. Or is she?