The attraction of making big money dealing heroin proves too much for recently acquitted Jo Jo, who jumps on the bandwagon at the first opportunity. But evil undercurrents of violence and addiction soon surface as he becomes consumed by Edinburgh's drug culture, prompting him to think carefully about his future.

Money begins to roll in at long last as Jo Jo's heroin business takes off in earnest. But what he doesn't take into account, is that his dodgy dealings are about to destroy everything he loves.

The walls of Jo Jo's world come tumbling down as he finally uncovers the truth about his father's death. Meanwhile, the community spirit of the estate collapses under the pressure of Sarah's imprisonment, Charlie McCann's murder and a rampant Aids epidemic.