Meet Zoe and Greg Milton, a married couple who have let themselves go. Zoe was a stunner in her high school days, but the intervening decades have added seventy pounds, and removed most of her self-esteem. Greg's rugby-playing days are well and truly behind him, thanks to countless beers and fast food. When Elise, a radio DJ and Zoe's best friend, tells them about a new competition, it seems like the perfect opportunity to turn their lives around. Fat Chance will pit six hefty couples against one another to see who can collectively lose the most weight and walk away with a large cash prize.