In a dimly lit dungeon, a mistress trains her new bisexual slave. She commands him to pleasure her and another man simultaneously, switching between their cocks, tasting their pre-cum, and taking their shafts deep into her throat. She humiliates him, calling him a 'pathetic bi-curious slut,' yet he's rock hard, loving every minute. She finishes him off, making him cum hands-free, leaving him panting, ashamed, and desperate for more.