Rain's family has summoned her and if she doesn't turn up, they intend to use her little sister in a dangerous ritual.
Rain know she can handle the magic. The problem is extracting herself from New Orleans afterwards.
Luckily, the alpha female of the Wyvern Pride owes her a favour or ten.

When Luke is sent to Nola as one of Rain's bodyguard, his instincts tell him that the witch is far more powerful than she appears to be.
One ritual goes wrong, showing him just how right he was.