A young girl, from a civilization that resides in deep underground tunnels, finds herself trapped in an inverted world and teams up with a resident to escape and return home.

17岁的海莉·伊斯顿惨遭杀害，震惊了一个小社区，当地执法部门随即展开调查。特雷维诺和贝拉米侦探发现自己陷入了错综复杂的线索和嫌疑人的迷宫之中。