Penny Harrigan is a low-level associate in a big Manhattan law firm. She has an apartment, but no love life. When C. Linus Maxwell, a mega-billionaire and international playboy, invites her to dinner and then whisks her off to a hotel in Paris, where he brings her to undreamed-of heights of sexual gratification for days on end, Penny is, well, pleased. However, when Penny discovers she is a test subject for a line of female sex toys so effective that women by the millions are lining up outside the stores to buy it on opening day, she understands the gravity the situation. A billion husbands are about to be replaced. What is Maxwell really up to? Erotically enabled world domination? Penny sets out to discover his motivations, and with a little help, stop him before it is too late.

佩妮．哈里根是曼哈頓一間大法律事務所的初階律師，有間公寓卻沒有感情生活。周遊列國、身價上千億的花花公子萊勒斯．麥斯威爾，邀請她共進晚餐後，立刻帶她到巴黎的一間飯店，連日體驗前所未有的性愛高潮，讓她十分愉悅。然而，當佩妮發現自己其實是一款女性性愛玩具的實驗品，而這款效果卓越的商品在開賣日當天吸引了數百萬的女性排隊購買，她才知道事態嚴重；因為上億個真人丈夫將被性愛玩具取代。麥斯威爾的目的到底是什麼？是用性愛控制這個世界嗎？佩妮決定挖掘他的動機，在為時已晚前用盡一切可能的力量來阻止他。