Stefanie has been in Mistress Sandras institute now for more then one year. But to become a perfect rubber slave girl is still a long way off. Severely packed in latex, in a blow up straitjacket, with dildos and a leg binder she spends her nights and attends her daily training lessons. Additionally she has to agonize all the dirty tricks of her classmates. Of course Mistress Sandra does not accept such an illegitimate attitude. So severe punishments are common practice. For example the Blow-Job-Box, where the girls have to give paying guests blowjobs. Stefanie´s day ends with a cruel electro therapy. And while she is convulsed with pain, her Mistress amuses herself with her maid Jacline!