Endara is a maid in the royal castle. The girl is happy with her fate, because she is safe next to the king and does not have to be afraid of the Evendins, magical creatures that attack people.

Suddenly, a mysterious lord arrives at the court. He asks for Endara's hand. The maid cannot refuse a high-born man and goes with him to the border lands. There, Ani accidentally learns about the impending rebellion. The ilfits, demonic entities about which legends tell, are approaching the borders of the kingdom.

Now Endara will have to figure out why the lord needed her, find out the shocking truth about the evendins, the ilfits and herself, distinguish truth from lies and find the answer to The main question is: what is the magic of air strings and how can it protect the kingdom.