The season's eliminated contestants have returned for a Second Chance Weigh-in. Each of the contestants will step on the scale, and the contestant with the highest percentage of weight loss is back in the competition! Hap is already eliminated, but Matt is still in the running when the eliminated contestants hit the scale. Ruben clocks a total weight loss of 85 pounds, Fernanda has lost 42 pounds, Holley has shed 74 pounds, Craig has ditched 78 pounds, and Bobby has abandoned 97 pounds, which means that Bobby is back on the ranch and Matt is eliminated.
Alison announces that there will be a double yellow line in this week's elimination. Two contestants will fall below the line, and the remaining contestants will vote to send one of their housemates home. The next morning, the trainers are thrilled to see Bobby back on the ranch. In the gym later, the contestants work harder than ever to avoid the dreaded yellow line. Luckily, the trainers are feeling merciless today.
After the workout, Bob has a private chat with David about his current wife. David's first wife is a huge motivation for his desire to transform his life, but his current wife is also a tremendous inspiration for him. After being on the ranch, David is eager to talk to his wife about the issues he's managed to overcome so far, and to tell her just how much she means to him.
The next day, the contestants arrive on the beach for a very intimidating challenge. Alison meets them at the top of a sand dune to tell them about today's event: the contestants will have to carry weights up a difficult sand hill. The first person to get ten weights to the top wins $25,000 worth of gym equipment, and the loser will have a one-pound disadvantage in this week's weigh-in. The competition begins, and Jay gets off to a strong start by making it to the top of the hill first. Although Marie finds a golden weight worth five weights, in the end, Jay collects the ten weights and wins the gym equipment. Tanya finishes the challenge last, which means she'll have to battle a one-pound disadvantage on the scales this week.
Back at the ranch, Abby from Season 8 stops by to pay the contestants a visit. Abby overcame some unbelievable obstacles to turn her life around, and she provides great motivation for the contestants. Later, David has an incredibly emotional conversation with his current wife to let her know just how much he loves her.
Later in the week, Dolvett takes the contestants to a nearby racetrack to meet NASCAR driver Carl Edwards. Carl introduces the contestants to his workout, which involves bleacher runs through the raceway grand stands. Marie has a sidebar with Jillian to talk about her goals in the competition. Jillian assures Marie that she can do anything she sets her mind to, and that she'll have Jillian's support every step of the way.
This week's Last-Chance Workout is more intense than ever, and all the contestants are eager to avoid the double yellow line in this week's elimination. Before they know it, it's time for the weekly weigh-in. Tanya hits the scale first to clock a three-pound loss. She wanted more, but she's below the 200-pound mark for the first time in years. Bobby drops seven pounds, David sheds 12 pounds, Chelsea relinquishes six pounds, Rachel ditches six pounds, Jennifer abandons six pounds, Jay bids adieu to four pounds, Marie drops four pounds, and Tumi sheds four pounds. The weigh-in results put Tumi and Tanya below the yellow line, and the remaining contestants reluctantly vote to send Tumi home.
The eliminated contestants return for a second chance to rejoin the competition, and a brutal sand dune challenge leads to another elimination.