Sa Bina's life shatters when she is thrust into a strange world as the old emperor's concubine. On their wedding night, his own son commits murder to seize the throne, leaving her vulnerable in a lethal court. She strikes a desperate bargain with Lucretius—beautiful but deadly—to navigate the kingdom's treacherous landscape. Their alliance becomes her lifeline as she battles manipulative nobles, power struggles, and unexpected feelings in a realm where survival demands cunning and every decision carries deadly consequences.