Eighteen-year-old Michelle, alone with her stepbrother, finds herself drawn to his forbidden charms. She touches herself discreetly, imagining his touch, while he showers nearby. Caught in the act, Michelle's embarrassment turns to frustration as they clash over their undeniable attraction. Eventually, they give in, Michelle exploring her brother's substantial length with eager eyes. Just as they're about to seal their taboo connection, an unexpected interruption forces them apart.