Could a radical, science-backed new diet be the key to controlling Australia’s diabetes epidemic? Doctor Michael Mosley and exercise physiologist Ray Kelly challenge people living with type 2 diabetes to try a diet that can reduce symptoms of the disease in a matter of days. Meanwhile, Michael takes on a diet of sugary carbs and saturated fats to reveal how processed foods affect our bodies. Armed with evidence, Michael and Ray take their fight on the road, finishing up in the seat of power - Parliament House. Will their efforts be enough to revolutionise the health of a nation?