Weighing 46 stone at just 33 years old, Sharon Hill, Britain's biggest woman, could hardly move or leave her house. Her husband Andrew, who cared for her, was also imprisoned. Classed as morbidly obese, Sharon chose a risky life-changing operation to give her a future outside the home. Two years after she had bariatric surgery, the cameras return to find that, having shed a massive 14 stone, Sharon has started to put the pounds back on again. Sharon continues to battle her demons around food. With the help of a leading psychologist and a specialist surgical team, she decides to put herself through a second risky surgery. Can she finally live a life beyond the confines of her house? And will her marriage survive?