In this sizzling continuation of the Mastered series by New York Times best-selling author Lorelei James, a man will find the domination he's always craved.... Shiori Hirano and Knox Lofgren are left to run the martial arts program at Black Arts while Ronin Black travels. On the surface, the two highest ranked belts appear to cooperate--but in private, they butt heads constantly despite the undeniable attraction between them. Soon their power exchanges start to make for a sweltering dynamic in the bedroom.... At first Knox is shocked to be living out his submissive desires, but Shiori sets out to prove that embracing his true sexual nature doesn't make him a weak man. But even while their sexual relationship grants him a power and fulfillment he finds surprising, there's no training regimen for the fight that comes with loving a strong woman....