Carla, a busty blonde, finds herself alone in her car, the hum of the engine and the purr of the rain against the windows creating an intimate atmosphere. She's been thinking about her secret lover, and the tension builds as she unbuttons her blouse, letting her ample cleavage peek through. Her hand wanders, caressing her thigh, inching up her skirt. She's wet, her panties dampening with desire. She leans back, eyes closed, fingers dancing over her clit, imagining her lover's touch. Suddenly, she hears a noise, and her eyes snap open to find herself caught in the act by an unexpected witness.