Powerful, beautiful, and covered in scars... Brielle, born of a mortal-immortal union between a human mother and the devil Himself, is prophesied to be the one capable of turning the tide in the brewing apocalypse. As Brielle's thirtieth birthday draws near, she strikes a deal with the devil and sets out on a journey of self discovery. In an attempt to comprehend what it means to be fully human, Brielle finds herself at the door of her therapist, Adam. Blurring relationship lines and questioning everything, she quickly learns that humanity, vulnerability, and love are things she isn't prepared to handle. Distancing herself, she finds shelter in her father's arms once more. Two worlds are about to collide... When the archangel Michael suddenly takes a deep interest in Brielle, Lucifer begins to understand that his greatest opponent is curious about more than just her choice. Michael's fall will be Lucifer's rise and only Brielle holds the key to making it happen. With a human, an angel, and a demon all tearing at her heart, Brielle realizes it's time to decide if her loyalties lie with Michael in Heaven or her father in Hell.