In the quiet of their shared home, these eighteen-year-old sisters can't help but notice the changes in their stepbrothers. Their bodies have matured, their voices deepened, and their eyes hold a new hunger. One evening, as they study together, the sisters feel the tension building. The stepbrothers' gazes linger on their sisters' developing curves, and the sisters can't help but steal glances at their brothers' growing bulges. A game of strip poker turns into a night of forbidden exploration. The sisters, their faces flushed with curiosity and excitement, discover the joys of pleasing a man and the pleasure they can bring to themselves.