Years after the outbreak of a deadly plague, after all quarantines failed and the outside world became a lost cause, uninfected survivors live under the protection of an oppressive domed city. The law declares that exposure to the wilderness means death. Under these conditions, a tribe of eight infected outcasts begins a long and dangerous journey. They mean to reach the only other living city of which they know, and to chronicle their lives along the way. As they struggle with disease, exposure, hunters, and their own disagreements with one another, can they manage to pass on their legacy before they pass on?