Buffed-up black Master Marc and his white female assistant dominate a Caucasian girl-man and his plumpish wife.  Black Obsession is light on the kink - a little spanking here, a little flogging there - and heavy on the cunt-lapping (for a purported fetish vid, that is).  Points off for the decidedly unglamorous women and the equally hi-hum set, somebody's faux Sears bedroom.  Master Marc has presence, but he's pretty much wasted in this marginal effort.