The 28th made the choice to free the Hag Stymarla from the keep of the western wind. In exchanged she promised to answer 3 questions with her power of foresight.
After freeing Stymarla from her prison, she promptly reverted to her evil ways and trapped the players. While the 28th were distracted asking the three questions, she used her powers to move the keep high into the atmosphere and toward the center of the valley.
She strikes a bargain to only set them free after they free her two sisters,(Mikemma and Corissa)that are being held in two similar keeps, The Keep of the Northern Frost and The Keep of the Eastern Snow