The Wearle

Gabrial is a young dragon, anxious to both prove himself and also find his father who years ago was one of a Wearle of dragons who set out from their home planet and were never heard from again--and now he is part of a new Wearle that has come to Erth, but one of the other dragons has dark plans, and when war erupts between dragons and humans, Gabrial finds that his only ally is an unusual human boy called Ren.