After an infectious outbreak causes people to become rage filled and cannibals, a group of survivors must figure out how to get by. The infected aren't the only threat though. After the fall of society, people begin to lose their humanity, as these three struggle to hold on to theirs.

In the fall of 1963, Eddie Birdlace is an 18-year-old Marine Corps volunteer who is about to ship out with three of his buddies for a tour of duty in Vietnam. Planning a massive blowout for their last night in San Francisco, Eddie, his buddies, and a number of other Marines set up a contest they call a "dogfight."