The biggest winner is "The Biggest Loser" in this compelling new weight-loss reality drama in which celebrity fitness trainers join with top health experts to help overweight contestants transform their bodies, health and ultimately, their lives. Unique physical challenges, surprising alliances and irresistible temptations make the competition even tougher for the contestants. In the end, "The Biggest Loser" becomes the biggest winner, walking away with a healthier body - and $250,000.