When Slate accompanied his alpha to a herd they are now responsible for, he didn't expect to meet his very human mate—who has cancer. Will mating her heal her or will it kill him? Slate doesn't care which, because now that he found his mate, he can't live without her no matter what. But then his mother and youngest sister get attacked, and Slate has to face his past.

When Katie Williams, her half-shifter-sister Sara, and her de facto father Henry suspect she has the same disease that killed her mother, she turns for help to the doctor that came with their new alpha. But as she is being examined, a man charges in and attacks the doctor, claiming to be her mate. Even if Katie can get over being mad at him, can she chance killing him if the mating doesn't cure her?