In the throes of "Crescendo 2," two bound Asian nurses, their bodies glistening with sweat, are subjected to an intense, relentless lick-fest by a machine designed to tease and tantalize. Gagged and helpless, they squirm and moan as the device's wet, serpentine tongue explores every inch of their quivering flesh, from the tender buds of their nipples to the smooth, sensitive skin of their bellies. Their moans grow louder, more desperate, as the tongue plucks at their navels and laps at their throbbing clits, bringing them closer and closer to the edge.