In a dimly-lit, industrial dungeon, muscular men, both tops and bottoms, are bound and gagged, awaiting their turn on the breeding stock. The air is thick with anticipation and the scent of sweat and leather. The dominant studs, their cocks already hard, line up to take their fill of the submissive mares, their asses raised and ready. The sounds of wet, slapping flesh and moans fill the room as the studs take turns, fucking the mares hard and deep, their massive cocks glistening with lube and sweat.