The last imperial dragon is being barely cared for by Master Lan, most of the duties fall to his slave girl - Ping - a name we don't find out till later as he doesn't bother using her name and she doesn't know it either it's on a necklace she wears. She rescues the dragon from certain death and they go on an adventure to the ocean where the dragon needs to go to for healing.
They fight through necromancers and the dragon hunter who has claimed that Ping is an evil sorceress!
An interesting story that has a great character in the Dragon with Ping as an interesting secondary character, missing some depth but that's probably because it is intended as a children's book.