The slave's wrists and ankles are securely fastened, their body stretched taut, ready for the machine's unending onslaught. The sex machine, a gleaming testament to human ingenuity and desire, grinds against the slave's eager flesh, its piston-like motion driving the slave to the brink of ecstasy and back, over and over, until they are a quivering, panting mess of pleasure and exhaustion, yet yearning for more.