Sammy Keyes trades in her hightops for hiking boots—and winds up with blisters.

This isnotthe summer camping trip of Sammy's dreams. She imagined shady glades, meandering streams, a deer or two. What she gets are scrubby shrubs, blazing sun, rattlesnakes, ticks, and scorpions. Her fellow campers are desperate to catch a rare glimpse of an endangered condor. To Sammy, the trip is nothing more than the painful in pursuit of the unspeakably ugly.

But when she and two other girls find an injured condor, Sammy's intrigued at last. As they track down a clue, they stumble onto two classmates and wind up lost. Which leaves three girls and two boys in a canyon with one tent and six billion biting flies. Oh—and an armed and dangerous highstakes poacher.

S'mores anyone?