Lilith del Sur is an unremarkable teenager being raised by her single mother in the Sangre Pack; that is, until she inexplicably transforms into a wolf mere months before her eighteenth birthday. The pack itself is dying out due to newer generations being born without the ability to shift, which causes Lilith to become an extremely important asset to the pack, whose Alpha and Beta plan to leverage her to garner resources for their benefit; as well as a pawn for her mother, who seeks to use her newfound powers to advance her own social status. After being marked as a mate for the Alpha Apparent of the much larger and far more powerful Cometa Roja Pack, Lilith begins to uncover dark secrets about both packs that put her life in increasing danger. Who can you trust in a world where no one is who they seem to be?