Young, pretty and respectable trained nannies Grace Cadbury and Mary Redfern never expected to be plunged into a den of vice in picturesque Foxglove Manor deep in the English countryside in 1965. But that is what happens when they are hired to for a week to supposedly to look after identical twins Castor and Pollux Harrington. Because Castor and Pollux turn out to be brilliant but twisted nineteen-year-olds with a taste for sexual experimentation, domination and sadism, who have been regularly supplied with innocent female playthings by their doting and equally eccentric parents.
Can they survive seven days of such sexual debauchery? And if that was that was not bad enough, Grace and Mary find their feelings towards each other are growing into something unexpected, intense and quite improper. Is this also part of the twin’s game or are their own secret natures being exposed? Perhaps they will find out when Castor and Pollux put their affection to the ultimate, intense test.