The tale of an outcast Dragon warrior

Don and his groups were set out to find an old artifact "the heart of tarasque" a crystal gem that holds power to unknown magic.
He and his peers were to retrieve it before a mass of human army could discover it.
He and his groups are Dragons who took the liberty to retrieve the heart.
Don made an operation to go alone on the human army as part of his intended plan.
He's plan were to spy on the human army and made notes on the progress, and made sure that they won't head for the mountain entrance were the heart is located.
But trouble struck him as he found a little young girl in the process who is badly injured.
Would Don just gonna let this slide?
or help the poor little young girl in his operation?

This story will lead you to a unknown adventures and discovery from who might this little girl would be.