Bound, gagged, and blindfolded, the bisexual slave is at the mercy of his Mistress' every command. She teases him mercilessly, running her fingers along his throbbing cock, bringing him to the brink of orgasm only to deny him release. His Mistress then introduces him to the bi-sexual fantasies he's long suppressed, making him service another man's cock while she watches, laughing at his humiliation. It's a tough training, but he's learning fast.