 In order to prevent Sophie from falling for Geoff, Mark hacks her email account in order to find out her thoughts on him. This leads him into going to a "Rainbow-Rhythms" dance class. Here Jeremy meets a sexually liberated American girl named Nancy who is determined to break the most bizarre sexual taboos, with the help of Jeremy. However Jeremy becomes jealous when a new member of Rainbow-Rhythms, Gwen, begins to attract the nymphomaniacal attentions of Nancy.