In a bizarre twist of BDSM, two German mistresses introduce their slaves to a new game. They bind the slaves' arms behind their backs, then begin to spank them, their hands leaving no inch of the slaves' flesh untouched. The slaves squirm, their cocks growing hard despite the pain. The mistresses, pleased with their reaction, decide to reward them. They straddle the slaves, their wet pussies rubbing against the slaves' throbbing cocks, teasing them mercilessly before finally impaling themselves, riding the slaves to a wild, taboo orgasm.