Absolutely everyone has a demon, even the kindest, most correct and honest of people. The main character Eugene is a sixteen-year-old boy, the prince of one of the four kingdoms. As befits a hero, he is kind, fair, wise beyond his years, devoted to his family and his people. However, this does not mean that ill-wishers do not make insidious plans. Kidnappings, torture, violence, demons wanting to feast on his soul - Eugene will have to go through all this. Thanks to this, the veil of the other, dark side of the main character will be lifted. You will see how a pure and innocent soul breaks down, is filled with darkness and vices, how a young man tries to fight with himself, his dark essence, which is gradually gaining strength. And problems such as slavery, racism, the struggle for power and cruel invaders that Eugene confronts are just a decoration for what really matters - the fight against his own evil, his own demon.