31 year-old David Smith used to weigh 45 stone. He was eating himself to death, miserable, friendless and a virgin. Without the use of gastric bypass surgery, David has gone from a morbidly obese loner to a healthy, happy fitness instructor and lost more than 28 stone. This documentary follows his life and his transformation from the beginning of his over-eating problems to his new life today as he tries to find a girlfriend. We see his extraordinary physical change as well as a complete overhaul of his personality.