8-year-old Marcus suffers with ADHD, a difficult problem to diagnose and treat and one which places an enormous strain on the sufferer and their loved ones. Meanwhile, Dr Ranj Kochhar is treating Adam, a young man whose life is beginning to spiral out of control due to a crack cocaine addiction.

Patients include a recently released prisoner with heart problems, depression, a cocaine addiction, and a young woman with a rare form of arthritis.