All three sections are independent, but are linked by the setting of Edinburgh and the reappearance of incidental characters, in particular Maurice Roëves, who appears variously as an inebriated wedding guest, a figure in a dream, and a pub patron.

Moping at a bar, Boab is approached by a profane stranger claiming to be God who berates him for his wasted life and transforms him into a housefly as punishment.

His psychedelic experience occurs at the same time as a bolt of lightning, resulting in Coco exchanging bodies with the newborn baby of middle-class couple Rory and Jenny.

"The Granton Star Cause" segment is named after an Edinburgh housing district and was filmed on location in Muirhouse and Pilton, including Ferry Road Drive.

An even tougher, grimmer portrait of life in inner-city Edinburgh than 'Trainspotting,' the striking film will click with hard-core Welsh fans, but its pessimistic tone and unrelenting brutality will make it a tough slog for mainstream auds.

"[9] Stephen Holden of The New York Times wrote, "If 'The Acid House'...is as flashy a piece of work as 'Trainspotting,' it lacks its forerunner's sociological depth.