Grace, a noble lady from the prestigious Saintport Kingdom, was betrayed in the cruelest way by her fiancé, Prince Lucas. Stripped of her engagement, exiled from her family, and cast down to the life of a courtesan, Grace chooses an unlikely ally for her revenge: Alexander, the tyrant emperor of the solvarence Empire. “And what benefit would it bring me to become your ally?” “I can grant you whatever it is you desire.” What starts as a cold, calculated alliance between two individuals with mutual goals soon begins to take an unexpected turn. Your Majesty, why do you summon me to your chambers every single night…? Thus begins the dangerous yet intoxicating revenge tale of Grace, a seductive avenger who has lost everything, and Alex, a fiercely loyal (and possibly unhinged) "mad dog" of a tyrant emperor once tamed. Will their shared vengeance burn the world—or spark something entirely different?