Batgirl (Angela Sommers), Erin (Randy Moore) and Mittens (Arielle Lane) find themselves tied in a deadly Siamese Human Knot. Catwoman (Candle) explains that any movement will only cause the knot to tighten, slowly strangling them all. She and Minx (Dee Williams) leave the helpless trio to slowly perish in the knot.
With all hope lost, Batgirl remembers the way out of the knot. If they girls can have simultaneous orgasms, then it will free them. The girls manage the task and escape.