It began over lunch. Three different women, best friends, decide to spice up their love-lives with a little extra-curricular sex. Shannon is first, accepting the dare of seducing a motorcycle despatch rider - while riding pillion through the streets of London.The others follow, Nadia and Corey, hesitant at first but soon willing to risk all in the pursuit of new experiences - and the heady thrill of trying to out-do each other's increasingly outrageous dares . . .