Chasing the Unknown
Tessa Parker is the odd ball of the Bluemoon pack; not strong enough to hang with the boys, but not girly enough to hang with the girls, which leads to the fact that Tessa has no true friends. Being the ugly ducking (not that she isn't appealing) Tessa is picked on by the 'teenage circle' of her pack, something none of the parents know about. At twelve, Tessa runs away and stumbles upon a rogue pack, the Tyriansun pack, and is quick to join. Four years later, the small rogue pack is captured by a very large pack.
The Bluemoon pack.
(Do not need to read Cat Calls Are, Officially, Racist before reading this)