Summer is winding down for Emerson, an almost-12-year-old boy raised with computers and video games who's been spending the vacation with his Navajo grandfather at sheep camp. Suddenly Grandpa Charlie is bitten by a rattlesnake, and Emerson, who has only driven around the lonely mesa, must now drive his grandfather to the E.R. in Shiprock.
Left on his own when the hospital decides to keep Grandpa overnight, Emerson becomes caught up with a...