Dr Rangan Chatterjee returns to Manchester to reunite with the team who cared for his father, and he explores how the NHS has treated kidney disease through the years. For years, Rangan's dad suffered from a condition known as lupus, which eventually led to kidney failure. Like 64,000 people every year in the UK, he was in urgent need of dialysis, and ultimately new kidneys. After undergoing dialysis 12 hours a week for 14 years, and never receiving a transplant, Rangan's father passed away at Manchester Royal Infirmary. Rangan returns for the first time to the ward where his dad was treated and hears stories of his time there. He meets patients at who rely on dialysis and the patients trained by the NHS to dialyse at home. Rangan also meets the NHS patients whose lives have been completely transformed after receiving a transplant.