"Glue" is the story of four boys growing up in the Edinburgh schemes, and about the loyalties, the experiences and secrets that hold them together into their thirties. As we follow their lives from the '70s into the new century - from punk to techno, from speed to Es - we see each of them trying to struggle out from under the weight of class and culture, peer pressure and their parents' hopes that maybe their sons will do better than they did. What binds the four is the friendship formed by the scheme, their school, and their ambition to escape from both; their loyalty fused in street morality: back up your mates, don't hit women and, most importantly, never grass - on anyone.