A day cooped up together drives a stepbrother and sister to self-pleasure. Michelle, frustrated, touches herself in the bathroom, only to be caught by her brother. Angry words are exchanged, but later, they find themselves drawn to each other. Naked, they explore their forbidden desires, Michelle taking in her brother's impressive length as he strokes himself. Just as they're about to cross the line, an unexpected interruption forces them to halt their heated encounter.