A European amateur couple, intrigued by the taboo, purchases a sexual slave. Outdoors, the husband presents his new acquisition to his wife. The trembling, yet eager slave, kneels before her, ready to serve. The wife, intrigued, watches as the slave's tongue tentatively explores her husband's hardening cock. The husband, controlling the slave's head, guides her, teaching her the art of pleasure. The wife, now aroused, joins in, her hands guiding the slave's as they both pleasure her husband, a threesome of forbidden lust unfolds under the open sky.