Driving home from a solo fishing trip, Mary Lust pulls over by the lake, noticing a man masturbating in his car. Intrigued, she approaches, offering a helping hand. He accepts, guiding her fingers to his throbbing cock. She strokes and pumps, her skilled handjob bringing him closer to release. The lake's breeze on their skin, the faint hum of passing cars, and the thrill of being caught add to their excitement. She milks his cock, making him cum hard, his hot semen spilling onto her fingers. Mary licks her hand clean, leaving him breathless and grateful.