The princess of the kingdom of Nyx, Soren, is no stranger to losses after a ten-year war with the neighboring kingdom of Atlas. One day, her best friend falls victim to the terrible poison of Atlas, and then she hatches a crazy plan: to steal the enemy prince from the battlefield and exchange his life for the antidote. But when the prince addresses her by name... the name of his sister, whose death is ten years old ago became the reason for the outbreak of war... everything changes. Trapped behind enemy lines, Soren is forced to pretend to remember her life in the kingdom of Atlas, surrounded by a family she does not remember. She searches for an antidote that, in her opinion, only Atlas possesses, all the while experiencing a battle of strange memories with memories of another life, another house, another girl. With Soren's return, not only memories awaken. Dark, forbidden magic begins to come to life, threatening both Soren’s new and old life. And when death lurks in every shadow, the lost princess must fight harder and sacrifice more than she ever dreamed of to save what she holds most dear.