Under one roof, a brother and sister struggle with their forbidden desires. In the quiet of night, they meet in the hallway, eyes drawn to each other's bodies. She, in a thin nightgown, he, bare-chested. Their hearts race as they inch closer, breaths mingling. He reaches out, tracing the curve of her shoulder, she leans into his touch. Their lips meet in a hungry, desperate kiss. Clothes are shed, revealing each other's naked forms. He explores her curves, cupping her breasts, she grasps his hardening cock. They're close, so close to crossing that line, but a creaking floorboard stops them, reality crashing back in.