Heir to the throne, descendant of the goddess of fire, the world's most skilled assassin, twenty-year-old Celaena Sardothien, under the name Aelin Galathynius, wanders the world in search of allies in the fight against the dark lord Erawan. She is the only one still capable of opposing the tyrant, who has plotted to fill the world with his monsters. But how could the girl know that Erawan, to maintain his power, will turn Celaena's own past against her?