Janet Jacme, a sultry brunette, finds herself alone on the metro, her mind wandering to taboo thoughts. She subtly parts her legs, rubbing her thighs together, the rough fabric of her skirt teasing her skin. As the train glides through the tunnels, she lets her hand drift up, cupping her breast, pinching her nipple through her blouse. She's lost in her fantasy when the train suddenly stops, and a mysterious stranger enters her car, catching her in the act.