He's injured and stranded far from help and home. To survive he must rely on his wits and a providence he doesn't believe in. The desert is a harsh schoolmaster, and Dave learns much about surviving when hope is seemingly gone.
Instruction comes from a cougar, a friendly coyote pup, and his own past, his present life, and what his future could be. Things will be different if only he can survive long enough to make it home and back to work - that is, if he has a home and office to return to.
I appreciated the "details in the desert". The main character's narcissistic personality was difficult to swallow at first. Even enough to be put off-ish. Nature (like God) is no respecter of persons. As such, the need for narcissism was slowly beat out of him. I would definitely recommend this book.