In front of a live studio audience, Alison introduces the season's theme, childhood obesity through the Challenge America program, with three young people being the faces of the challenge to reduce childhood obesity by having them go through a weight loss regime at home. Each will have one of the three trainers to work with, those three which includes the return of Jillian Michaels. Alison then calls out the names of the fifteen people who will be this season's contestants and who have no idea they have been chosen until their name is called. Each contestant gives a little background of him/herself. Once at the ranch the next day, five adult contestants apiece are assigned to one of the three trainers, Bob, Dolvett and Jillian, but realistically any contestant can call upon any one of the trainers for any advice or assistance. The fifteen plus the three youth are thrown into the fire with their first workout. Jillian in particular has issue with three of her team members, and tries to...