Tess Montgomery isn't your typical member of the Chicago wolf pack. In fact, she's not a wolf at all. She's an adopted fire magus of the pack and thus doesn't always "play by the rules." When her father and her best friend Nick are kidnapped in what the parahumans assume is a Hunter operation, Tess's pack is thrown into turmoil. With Alpha Paytah unable to step outside the bounds of his new position as Violet Marshall of Chicago's Purple Door District, Tess takes the reins to plan a rescue attempt.

Meanwhile, Nick and his fellow wolves find themselves in a world of battle and bloodshed. The Hunters have set up an illegal fighting pit where the strongest survive and the weakest are traded or killed. It's all Nick can do to keep up the spirits of his packmates and help them escape. Or survive long enough until they're rescued.

Unfortunately, Tess's rescue mission fails spectacularly, leading to her capture. She finds herself the unwilling guest of a local Hunter named Arjun. Handsome, charming, and deadly, Arjun tries to convince Tess that not all Hunters are the enemy. He even offers to help her find her packmates. But is he true to his word, or does he have his own wicked plans in mind?