Sarah thought Echo Ridge would be their fresh start-a remote wilderness retreat where she and her son could rebuild after their world fell apart. Instead, a wrong turn in a monster blizzard traps them in a nightmare where nature's fury is the least of their threats.

Hidden in the white-out are armed men hunting for millions in cash from a crashed plane. They've already killed to protect their secret, and a mother and child won't change that.

Ranger Cody Andersen races against time to reach them, guided by Luma-his cutting-edge AI partner who sees through the storm with heat sensors and predictive algorithms. Together, they've mastered this mountain. But the criminals aren't their only enemy.

Something else stalks Echo Ridge. The locals call it the Ghost-a figure that appears when death comes to the mountain. As bodies start falling and the storm intensifies, Cody realizes the legend might be hunting alongside him.

Three deadly forces converge in a wilderness where help is impossible and escape means surviving the night.

In a place where technology meets ancient mystery, where every shadow could hide a killer, Cody and Luma must become the hunters before they become the prey. Because on Echo Ridge, some ghosts are real-and some monsters are very much alive.