Sixteen-year-old Mila discovers she is not who--or what--she thought she was, which causes her to run from both the CIA and a rogue intelligence group.

Peregrine grew up trying to impress her parents Lord Tove and Lady Klausine by becoming the ideal Lakti. When she's ready to join her father in battle, a fairy arrives telling her she isn't a Lakti, she's a Bamarre and challenges her to free her people from tyranny.