London, 1972, and a charismatic anarchist called O'Connell dies of an overdose, leaving his artist boyfriend, Pearson, and fellow activist Nina in shock. It also leaves a spar room in their squat, so Pearson moves in Sweet Thing, a streetwise yet vulnerable young boy he initially picks up but then tries to help. Pearson isn't the only one who's interested though - glam rock star Johnny Chrome is on the brink of a breakdown and is convinced that Sweet Thing is the only one who can bring him back. As Sweet Thing gets drawn further into Johnny Chrome's dangerous orbit, Pearson and Nina discover that O'Connell was not all he seemed.