變態男意外發現，懶蛋捲款潛逃後，居然在阿姆斯特丹開了夜店，而且混得還不錯！他正好打算靠著拍色情片大撈一筆，想著要如何從懶蛋那邊弄錢來完成自己的事業。懶蛋聽信變態男的話，以為卑比仍在獄中，於是放心大膽地回到愛丁堡，殊不知心存不滿的卑比和暗中算計他的變態男，正等著對他展開報復！ The Trainspotting lads are back...and in worse shape than ever.
In the last gasp of youth, Simon "Sick Boy" Williamson is back in Edinburgh. He taps into one last great scam: directing and producing a porn film. To make it work, he needs bedfellows: the lovely Nikki Fuller-Smith, a student with ambition, ego, and troubles to rival his own; old pal Mark Renton; and a motley crew that includes the neighborhood's favorite ex-beverage salesman, "Juice" Terry.
In the world of Porno, however, even the cons are conned. Sick Boy and Renton jockey for top dog. The out-of-jail and in-for-revenge Begbie is on the loose. But it's the hapless, drug-addled Spud who may be spreading the most trouble.
Porno is a novel about the Trainspotting crew ten years further down the line: still scheming, still scamming, still fighting for the first-class seats as the train careens at high velocity with derailment looming around the next corner.