Wolf shifter Nathan Caldwell likes things casual when it comes to women, keeping them at arm's length and never letting them get too close. So, when he meets the one, the mate his animal has chosen, he gets the surprise of his life when she rejects him.

Geologist Dr. Violet Robichaux is focused on her career and science. She keeps a tight reign on her emotions and her tiger, so when her animal chooses the foul-mouthed and rude wolf as her mate, she quickly shuts that down. Her stay in Blackstone is temporary, after all, and she can't let her tiger or her heart make her decisions. But there's another reason she can't stay, one that's a matter of life and death.

When danger brings them closer together, Violet and Nathan must face the odds to help a friend in need. They risk their lives to do the right thing, but also grow closer. Can Nathan convince Violet they're meant to be together or will she resist the growing attraction so she can leave Blackstone with her heart intact?