Forced into captivity by Lucifer and crowned as his queen, Samara Daemonium struggles daily with her identity and daunting duties in Hell. She belongs to a race of Nephalem—hybrid beings who are half angel and half demon—and although she wields the powers of both supernatural species, she has yet to discover her formidable prowess and potential.

While protecting the Outer Rim of Hell, Lucinda continues to plot her father's demise and her ascension to the throne. Believing Lucifer plans to bypass her as Hell’s next ruler, she kidnaps his new heir and has every intention of killing him.

Meanwhile, Samara is faced with the threat of death for her part in an invasion. Her survival depends on revealing a dark secret, giving her no choice but to depend on Lucifer and his Tracker Demons.

Ultimately, Samara’s journey to self-discovery instills in her the importance of family and friends, and reminds her that belief in the impossible is the assurance of things hoped for and the conviction of things not seen.