In the heat of a stuffy afternoon, a brother and sister, both cloaked in religious garments, find themselves alone in the rectory. The sister, a curious and horny nun, can't help but notice her brother's impressive bulge. She tentatively reaches out, touching his cock through his robes, feeling it twitch and grow. He's shocked but excited, and soon they're locked in a passionate, forbidden embrace. She rides him reverse cowgirl, her habit falling around them as she grinds her wet pussy onto his length. They climax together, their moans of ecstasy echoing in the sacred space.