An old man secretly gives his daughter's tutor an aphrodisiac. As the aphrodisiac slowly takes effect, the tutor's body heats up, and even a light touch makes her react. She can't resist any longer and starts masturbating in secret. When the old man starts touching her, she initially resists, but the aphrodisiac gradually makes her crave the old man's dick, and when she's completely turned on, she shows a complete transformation by getting into him herself and shaking her hips.