Section 1: Stag Simon 'Sick Boy' Williamson leaves the
London crack scene and returns to
Leith when he comes into ownership of his aunt's pub. Convinced that the area is destined to become a social and cultural hub, Simon decides to focus his energy into making the pub an upper class establishment. Nikki Fuller-Smith is a university student who works part-time in a
massage parlour. Rab, a university acquaintance, introduces her to his friend Terry Lawson and his underground, home-made
pornography operation. The scene interests Nikki. Danny 'Spud' Murphy has been regularly attending group sessions in an attempt to kick his drug habit. His relationship with his partner Alison is estranged and Spud feels like he has become a burden on her. He considers his
life insurance policy and contemplates
suicide. Meanwhile, in
Amsterdam, Mark Renton is co-owner of a successful nightclub. One night, a
DJ from his hometown (Carl Ewart from Welsh's previous novel
Glue) plays at one of his clubs and recognises him. When Sick Boy learns of Terry's operation, he offers the use of the upstairs bar to shoot some scenes. During their first meeting, the group begins planning to shoot a full-length adult film. The first section concludes with "OOTSIDE", a chapter noting the release into society of Francis Begbie.
Section 2: Porno While in prison, Begbie received anonymous packages of gay porn sent from Sick Boy. He is determined to find the culprit upon his release. While accompanying an old friend on a debt collection errand, he meets Kate and begins a relationship with her. When Alison begins working at Sick Boy's pub and Sick Boy deliberately attempts to end her relationship with Spud, the friendship between Spud and Sick Boy is over. During one heated argument, Spud reveals that he received his share of the money from Renton. He also unveils his recent ambition to write a history of Leith. Begbie visits Sick Boy's pub. As the two converse, Sick Boy considers the merciless trait of opportunity and threat accompanying Begbie's release. Soon after, Terry, Rab and several other friends arrive and begin discussing their upcoming road trip to Amsterdam, a bachelor celebration for Rab. Sick Boy is initially reluctant to attend but changes his mind after Carl, a DJ, mentions that Renton works at a club there. Begbie kills Chizzie, a
pederast he met in prison who is also a friend of Spud.
Section 3: Exhibition Sick Boy's "Porno" shoot becomes a slow demolition of his so-called mates. Spud ends their friendship when Sick Boy tells him he was using him for the purpose of a scam, Nikki becomes disillusioned with him after realising that he really has no loving side and really is the cold-hearted, deceitful man that she tried desperately to ignore. Begbie grows tired of Sick Boy being 'smarmy', although Begbie becomes angry with everyone in due course. Spud tries to provoke Begbie into killing him so his wife Alison will profit from his life insurance. As Begbie is angrily beating Spud, Alison and the couple's young son burst in, stopping them. Spud is severely injured, but his last narration implies that he can see life getting better. The biggest departure Sick Boy has from his life is Renton. After promising to meet Sick Boy in
Cannes, Renton instead goes to
Zürich to empty their joint account and then start a new life in
San Francisco. This deception is the biggest blow to Sick Boy as he obviously treasured their unconventional friendship and cannot believe he was tricked by Renton again. Begbie later discovers Renton while visiting Leith and is hit by a car while running across the road to assault him. While Renton would have expected to feel happy by this he is heartbroken and comforts Begbie while he is taken to hospital. It is indicated that as Begbie slips into a
coma he may have forgiven Renton. After learning that Begbie has fallen into a coma, Renton flees the country with Nikki and Diane, as well as Sick Boy's £60,000 made from a financial fraud. The book ends with Begbie suddenly coming awake as Sick Boy confesses everything in hope that Begbie will resume his bloodthirsty hunt for Renton. ==Style==