A mysterious woman and man, strangers to each other, find themselves in a dimly lit, industrial dungeon. The woman, bound and gagged, is at the mercy of the man, who is armed with a thick strap-on. He begins to tease her, running the toy along her curves, making her squirm. He then presses it against her puckered hole, slowly pushing in, watching her eyes widen with a mix of pain and pleasure. He thrusts deeper, her moans muffled by the gag, as he pounds her relentlessly, filling her guts with his toy.