One morning Ethan is woken up by a loud noise coming from the back porch. When Ethan goes to investigate, he finds a mysterious letter left by nearby survivors.
Two days after receiving a threatening letter from nearby survivors, Deacon and Don. Ethan experiences a brief flashback of his now deceased brother. This inspires Ethan to get motivated and prepare for Deacon and Don's arrival.
After an epidemic wipes out most of the worlds population, America is left massacred and very few people are surviving. Ethan is a teenage boy living in this post-apocalyptic United States, and has learned how to survive on his own.