Daya Weir is a fierce but untested vanguard, loyal to the Trinity first and her family second. When a neighboring kingdom breaks a centuries-old treaty and attacks, she must decide whether to restore order or risk her people’s freedom. Her journey uncovers dangerous secrets that challenge everything she believes about friends, enemies, and love. In the end, Daya must choose between the destiny forged for her or the one she dares to write herself.