The life of thirteen-year-old Emily changes forever: during a terrible storm, a real winged stallion, Pegasus, falls onto the roof of her New York house. Myths and legends turn out to be reality. And Emily unexpectedly finds herself in the very center of an epic confrontation between the gods of Ancient Rome and the ferocious stone warriors of the Nirads. The ruthless barbarians are driven by a blind desire for destruction: they have the power to destroy both the legendary Olympus and the modern world of people. And an ordinary girl will have to unite celestials and mortals in order to preserve the Flame of Olympus and save everything that is dear to her.