Sister Mary Clarence, her habit concealing her innocent allure, finds herself in a secret chamber, her curiosity piqued by whispers of a forbidden ritual. She watches, eyes wide, as another nun, her habit askew, writhes in ecstasy under a whip's lash. The devil, in the form of a handsome stranger, approaches her, his voice a seductive purr. "Your chastity is your greatest sin, Sister," he says, his hands reaching for her habit, ready to corrupt her purity and make her taste the sweet forbidden fruit.