Special.

Lily is special. She has been since she was little. When her village is attacked by the northerners, the rebels who live north of the kingdom, she learns of a prophecy of her and two others. Now she and her most trustworthy friends must go on an adventure and while the darkening is happening. The darkening can take her friends and turn them into monsters. How can Lily possibly save her friends, find the others, and save the kingdom.
All Lily can do is know that she is special.