Fight promoter Zack Grayson is on the prowl for a rising star. As the top recruiter of a prestigious MMA promotion company, he wants to take someone where he will never be able to go again: the top of the professional league. He didn't expect that someone to be the woman he loved . . . and left.

Top-ranked MMA amateur fighter Shayla "Shilla the Killa" Tanner built walls around her heart when Zack left her seven years ago—and again when her husband turned violent. Now, seeing Zack is nearly enough to send those walls crumbling. But she can't risk the exposure of the limelight, and she definitely can't risk another heartbreak.

As Shayla and Zack grow closer, though, business turns personal. And once their passion unleashes, there's no going back . . .