The lost stone of SkyCity / Heather Waugh.

Sunaya doesn't believe in Ice-People. Not until they steal her friend Danam and her Father's precious gotal herd, that is. They want Danam to become a Cloud Dragon Protector for their Princess, but Sunaya doesn't trust any of these Ice-People, especially unpleasant Prince Praseep. And she needs those gotals back before her Father notices they're missing. As they cross the roof of the world to the mythical SkyCity of greenstone and gold, Sunaya discovers she has powers of her own. Was it actually her the Ice-People were searching for? The SkyCity is dangerous, and time is running out for the Cloud Dragon to be confirmed. Danam must pass the deadly Dragon Tests of Compassion, Courage, Fortitude, Resilience and Strength. But will he be able to survive? Or is Sunaya the one who should be embracing her destiny to be a Cloud Dragon? Underneath the Dragon Mountain, not everything is set in stone. And friendship can be its own reward.