It is of course based on the sequel book that the author wrote. Its title is the name of adult material shortened down to its nickname which begins with a "P" and is 5 letter long. They were interviewing the guy who did the movie who was promoting his latest flick "28 days later" and is in the process of trying to get started with it. He is going to have the entire cast return, Ewan and all. In which if you folks did not know this director discovered Ewan McGregor. It takes place 10 years later after Trainspotting and entails them with the production of things that the title tells of.