Mark Renton has it all: he's good-looking, young, with a pretty girlfriend and a place at university. But there's no room for him in the 1980s. Thatcher's government is destroying working-class communities across Britain, and the post-war certainties of full employment, educational opportunity and a welfare state are gone. When his family starts to fracture, Mark's life swings out of control and he succumbs to the defeatism which has taken hold in Edinburgh's grimmer areas. The way out is heroin.
It's no better for his friends. Spud Murphy is paid off from his job, Tommy Lawrence feels himself being sucked into a life of petty crime and violence — the worlds of the thieving Matty Connell and psychotic Franco Begbie. Only Sick Boy, the supreme manipulator of the opposite sex, seems to ride the current, scamming and hustling his way through it all.