A jaded mistress, tired of her cuckold's predictable performance, decides to spice things up. She brings in a young, muscular male slave for a bisexual training session. The cuckold, forced to watch, is humiliated as his mistress enjoys the slave's attentive mouth and throbbing cock. The slave, eager to please, takes the mistress in every position, making the cuckold's inadequacy painfully apparent.