When Diana Cambridge and her mercenary unit within the Harlech Syndicate are betrayed in a top-secret mission within Harlech, Diana is the lone survivor who vows revenge against the conspirators that betrayed her comrades. In an effort to achieve her goal, Diana allies with Allodia de la Cabernet, and takes on a secret identity as a vigilante as she goes against the Neo-Harlech Syndicate that forms, and includes the Harlech Police Department and Mayor's Office.
However, Tristan Merrick quickly realizes that the love of his life is this mysterious vigilante and becomes uncomfortable and fearful for Diana as she places herself in harm's way. Tristan allies with Charlemagne de la Cabernet and develop a mitigation strategy so that they can safely capture Diana before she can harm herself. Inevitably, Diana and Tristan land themselves in conflict with each other as one seeks to save the other, while the other seeks to save others from a dastardly plot left behind from an old enemy.
Will Tristan be able to stop Diana? Will Diana avenge her fallen comrade? Who are these conspirators, and what is their plot that has Diana so invested in bringing them to justice...?