Heroin addict Mark Renton stumbles through bad ideas and sobriety attempts with his unreliable friends -- Sick Boy, Begbie, Spud and Tommy. He also has an underage girlfriend, Diane, along for the ride. After cleaning up and moving from Edinburgh to London, Mark finds he can't escape the life he left behind when Begbie shows up at his front door on the lam, and a scheming Sick Boy follows.

The drug-induced utopias of four Coney Island residents are shattered when their addictions run deep.

Low-level bureaucrat Sam Lowry escapes the monotony of his day-to-day life through a recurring daydream of himself as a virtuous hero saving a beautiful damsel. Investigating a case that led to the wrongful arrest and eventual death of an innocent man instead of wanted terrorist Harry Tuttle, he meets the woman from his daydream, and in trying to help her gets caught in a web of mistaken identities, mindless bureaucracy and lies.