The series follows Mason Raines and a giant dog named Bowie, and also Mason's father Tanner and the President's daughter, Sam, as they pursue a variety of adventures after the country falls victim of a Superpox virus, which kills like 99% of the U.S. population. Some people aren't killed by the virus and instead mutate. There are a few pockets where civilization has survived, but they are far and few between. Bradley generates a couple of books a year, and they contain various survival skills regarding starting fires, how to jump start a car, etc. The books flow quickly, and they aren't challenging mentally, but they are entertaining. The repartee between Tanner, an ex-convict, and Samantha is quite entertaining, and I'd say they are my favorite characters. The dog, Bowie, is a heroic figure too.