一辆巴士载着一车的乘客开往一个叫“性爱世界”的地方，在那里他们有一个周末的时间，可以释放自己去自由地满足自己最秘密的欲望……

玛丽的男友做爱时总是不够持久，于是他向恶魔许愿，若能让他持久一点，就献出自己的灵魂。恶魔答应了他的要求，赐予他一种神药，让他无时无刻都勃起。为此，狂喜的二人决定办一个派对来庆祝，玛丽还决定邀请豪放的姐姐参加这个纵欲派对

Mark and Elaine have two teenage kids, Ronnie and Stacey. And then there is Kate, Elaine's sister, who's been having an affair with Mark for fifteen years - she tells us in the opening voiceover. While living under the same roof, no less. She also tells us in that same voiceover that she's had some less-than-pure relations with Stacey over the years, but that's neither here nor there. Mark and Elaine are finished going at it, two things happen: first, he informs Elaine he taped them having sex. Second, he tells her he's leaving her. Brilliant. Kate rushes down to the boat, hoping they can go away together. When Mark refuses and wants to go alone, she hits him in the head with a champagne bottle, sending him overboard. When he doesn't surface, she decides to cover up the murder. The only problem is, the sexy new next-door neighbor, Vickie, saw someone else on the boat with Mark that night-though it was too dark to see who it was.

被称为“龙”的国际犯罪集团捕获了两名间谍，男性和女性，并通过快乐使用性酷刑，让他们通过让他们受到如此强烈的性快感来揭示秘密配方，没有人可以接受。