A leather-clad dom wields an estim device, sending jolts of electricity through the bound submissive's body, making his cock twitch and ache for release. The sub, confined in a steel chastity cage, whimpers and moans as the voltage increases, his balls tightening in anticipation. The dom expertly manipulates the device, coaxing a thick, ropey cumshot from the sub's throbbing cock, milking every last drop.