My Wife's Master: Her Husband Watched Her Succumb!

Brian comes home early one day to find his wife in bed with Darnell. He is shocked and angry, of course, but he can't deny that he's highly aroused to see how Darnell "masters" his wife. He hopes he might learn something from the man, so he goes along with her training under Darnell's strong hand, as long as he can watch and learn. But things don't go quite the way Brian had planned!