Pack of Flames by Kala Aster

A centuries-old dragon with a broken heart and a rare white wolf with a target on her back are brought together by an ancient vow. Sparks will fly… but will they survive?

Gemma has lived her life on the run, always looking over her shoulder for her enemies. As the only white wolf born into her pack in more than a century, she’s meant to be sacrificed to the moon goddess… but Gemma isn’t going to the altar willingly.
As her time runs out, Gemma has one last place to turn. Her very last hope comes in the form of a necklace and an address scrawled on a sheet of paper. Despite warnings of a demon who resides there, she heads to the mountaintop and comes face to face with Theo.
Theo has lived a lonely, heartbroken existence since his mate died two centuries ago. He virtually forgot about the promise he made generations earlier until Gemma shows up at his door. Now, he must choose whether or not to honor his vow when he realizes how much trouble the wolf brings—not just from her pursuers, but also in the way she stirs up feelings inside of him.
Will Theo let Gemma heal his broken heart… and will he be able to keep her safe? Anything can happen in dragon territory…