Constantinople, 1453. As Ottoman forces surround the city, seventeen-year-old Theodora must protect her family's silk trading empire while navigating the chaos of a city under siege. When she discovers her father has been secretly funding the city's defense, she becomes entangled in a dangerous plot involving Byzantine nobles, Ottoman spies, and a forbidden friendship with a young Turkish cartographer. With the walls crumbling and time running out, Theodora must choose between loyalty to her heritage and a chance to save the lives of those she loves, even if it means betraying everything her family has built.