Ian is a fairly typical husband – lazy, self-centred and unimaginative in bed. Over the years, he's let himself go, while wife Laura is sexy, vibrant and missing her wild younger days. When it's time to start a family, the couple plans one last child-free adventure. But only as they are jetting off does Ian discover that Laura's idea of adventure is hot, raunchy sex with everyone but him, under his very nose. His attempts to take the moral high ground are thwarted by his very obvious arousal at seeing his wife 'in action'. He's embarrassed and humiliated at every turn, and soon forced to give in to his submissive nature and accept the situation. Add Laura's new girlfriend, Andrea, and things get even worse. The two indulge their outrageous desires with any number of partners, while at the same time finding new ways of sexually abusing, demeaning and punishing Ian himself. At last, on their way home, Laura meets Janine, a shy young woman in need of help. Will she become another of Laura's devotees, or a second harsh mistress for Ian? Perhaps both?