Duncan Saint, the rugged stepdad, finds himself helplessly drawn to his stepdaughter's allure. Binky Beaz, a sultry minx, has been taunting him with her provocative glances and teasing smiles, all while they're supposed to be enjoying a family gathering. As the night wears on, their mutual desire becomes increasingly difficult to ignore. In a moment of weakness, Duncan can no longer resist Binky's charms, and their taboo tryst begins.