The Biggest Loser is back with a two-hour special edition. In this episode, the Muha family will battle the Samuels family in hopes of winning a $50,000 prize. The Biggest Loser: Special Edition brings back trainers Jillian and Bob to help two families desperate to change their lives. The two families will face the emotional, life-changing events that initially caused their weight gain, as well as a dessert challenge where the families must work together to carry ice cream boats across the desert to win great prizes. In the last hour of the special, the family with the highest percentage of weight loss will be the winners.

The weight-loss battle continues at home with engaged couples Steve and Sarah and Edwin and Rasha. Not only do the couples have to continue the lifestyle change that they learned at the ranch, but they also must plan their wedding days. Before one couple wins the grand prize of a $50,000 dream wedding, they will encounter many surprises along the way including a visit from a season one contestant. The couple with the highest percentage of weight loss will be the winners.