Officer James "Mac" MacDonald knows his way around a crime scene, but when he discovers a dead body with a missing face at the bottom of a mine shaft in the dusty town of Quartzsite, Arizona, he doesn't know where to begin. Faced with the daunting task of solving the crime, he and his partner, Cheryl Sanchez, enlist the help of a motley crew of locals, but when the body count in the desert starts to mount and Mac and the locals themselves become targets, Mac's skills are put to the test in a race to save those closest to him.