Justice in Yellowstone National Park comes in two forms: Annie Peacock, a beautiful young judge who is the head of the park's judicial system, and Will McCarroll, long-time backcountry ranger who is obsessed with stopping poachers. Will's willingness to break every rule in the book has earned him a formidable reputation—and Annie's disdain.

Then Annie's mother is kidnapped. When Will tries to help find her, a shocking attraction between Annie and Will starts to sizzle—and then burn.

But when Will learns of a plan for trophy hunters to shoot the park's cherished alpha female wolf, he disappears into the back country to stop them. And it's there, in the wilderness of Yellowstone, that Will discovers the true extent of the danger to Annie's mother and to Yellowstone itself.

All is not as it seems in Yellowstone country—where people are far wilder than the park's animals, danger lurks around every bend of the trail, and passions between Annie and Will climb as high as the snow-capped peaks.