Season 7 of The Biggest Loser has arrived and while singing, "We are family!", the contestants enter the gym where they're greeted by "Days of Our Lives" star, Alison Sweeney! Ali tells them that their first workout will be without the trainers. Some look confused, and others just make a joke out of it with phrases like, "I can feel the burn, that must mean it' working", and "I've fallen and I can't get up! ".
Little do the contestants know, Bob and Jillian are watching the workouts via hidden camera! Bob and Jillian eventually burst into the gym and are bombarded with hugs and after choosing their trainers, get ready to see the damage done to their bodies at the weigh-in. With a very emotional weigh-in, everyone knows they have their work cut out for them, because they all have seen that this season of the Biggest Loser has the heaviest contestants yet, and the sad part is that they are who comprise this season.
The following day they share stories of their food experiences and how much they used to eat, leaving Blaine to say, "I have two cheeseburgers and then I go home and my kids are like, come play with us. I'm like in a coma..." and then admit to eating four when confronted by Filipe. Bob and Jillian later arrive on campus for the contestants' very first workout with their trainer. After experiencing how hard it really is, the workouts leave some contestants like Estella to say to Jillian, "Remind me not to like you too much."
Throughout the week the workouts continue with the same intensity and the contestants also get some advice about nutrition from their trainers and the same comment is thrown around amongst everyone, "This is a lot harder than what it looks like on TV when watching it from our couch."
They also endure eye-opening experiences when they get the opportunity to see how they have abused their bodies over the years. With the use of an incredible MRI machine, Dr. H and Dr. Rola Saouaf, a world expert at reconstructing these MRI images and showing them in 3 dimensional views, the contestants are able to see the insides of their unhealthy bodies. The MRI images show them all the fat that has been accumulated within their bodies, along with the detrimental effects this has had on their organs and joints. Dr. H also gives each of the contestants their real biological age, in comparison to the age they actually are today. After this, the contestants are more ready than ever to get into shape and be healthy again.
The contestants also have their first Challenge on an LA bridge! Their mouths drop when they see the pile of sand, and after many falls and tumbles, the Black Team gets the victory. Another of many firsts includes the contestants' first "Last Chance Workout". Bob has his teams working very hard, separately training each member of each team until they can't sweat and grunt anymore. Jillian does the same and after another intense workout, Jillian addresses her entire team, "You guys are not going to wake up one morning and the glass is going to be half full. Life doesn't work that way... Maybe you guys are afraid of how great you really are. Think about that, now it's time for you to thrive." After Shannon, Sione, Laura, Aubrey, Cathy, Nicole, Dave, Carla and Estella will be going home for 30 days because of the shocking news Ali reveals at the weigh-in, the nine remaining contestants know they really do have to thrive to get them back.
Reality has set in over this first week, and the jokes are over with because now it's time to get down to business in order to get their teammates back.