Florence, 1492. After the War of the Infernos and the expulsion of the demons, the Purple Council tries to maintain peace in the city amidst secrets, golden domes, and hidden paintings from the past. Arianna Salviani, daughter of the leader of this council, is the only angel whose wings were torn off at birth, a source of ridicule and scorn from the rest of the citizens. However, her greatest desire is to paint, an ambition denied to women, which her father manages to fight, securing her a place at the prestigious Magliato Academy. There she meets her best friend, Taddeo, the son of one of their rival families, who shares with her one of the greatest secrets of the war: there are angels capable of trapping demons in paintings. Despite everything, Arianna does not fear demons, but is fascinated by them, especially by one of those portrayed in these hidden paintings. While Taddeo tries to win her over, Arianna can only think about this demon who, perhaps, is just waiting for someone to awaken him.