A little rubber toy is strapped in the floating sling. The Mistress wants to experiment with the slave's arsehole, to see how deep and wide she can stretch it, but before she begins her experimentation, she needs to gain control of his mind. Once he is under, a wide array of toys are plunged deep into his arse. Finally she uses her self pleasuring vibrating strapon and fucks him long and hard with it, to the point of climax.