Wealthy business man and committed voyeur, Mark Parker, has a list of thirteen fantasies he is intent on turning into reality. Travelling between his London flat, his plush Oxfordshire mansion, and Discreet, his favourite S&M club; Mark is helped to realise his imaginatively dark erotic desires by two loyal members of his staff. His Personal Assistant, Anya Grant, and his Housekeeper, Clara Hooper.

Upon the backs of his willing slaves, Mark has written out his fantasy list in thick red pen. Only Fantasy 12 awaits the tick of completion against their flesh before Mark's ultimate fantasy - Fantasy 13- can take place.

But have the girls performed well enough to succeed in the final challenge? And what hold does the Bridge's Gentleman's Club, Anya's previous employer, have over Mark? A place Anya was only too delighted to escape from.

In order to find out, Mark's girls are going to have to face some of the fantasies they thought they'd left behind them all over again; and while they do, Mark will watch...