Meghan organises a glamping trip for the group, but tempers flare when Vannessa and Tina have trouble sorting out their differences. A challenging bungee workout has Ashely considering a second bariatric surgery.

Four obese best friends struggle to lose weight together. Meghan had bariatric surgery, but she has stopped shedding pounds. Vannessa hopes to get surgery but gorges on fast food with her family. They visit Dr. Procter to get back on track.

Vannessa works to repair the fractured relationship with her sister.

The ladies head to the beach to fulfill Meghan's dream, but things go awry.

During therapy, Vanessa finally confronts the demons from her past.

After disappointing weigh-ins, Meghan and Vannessa are determined to do better. All four besties attempt to conquer a massive waterslide. Then, meeting with a nutritionist and therapist motivates Vannessa to confront her enabling sister.

Meghan attempts to gain body confidence by shopping for toys at an adult store; Vannessa prepares to move away from her toxic sister, Jakie; the best friends struggle with a barbarian fitness boot camp.

The BFFs face the biggest challenge of their trip -- walking on the beach.

Vannessa reveals her post-surgery body, while Meghan struggles with stalled weight loss; Ashely hopes to get surgery and makes journals to help stay on track, but it gets thrown in her face; Tina's house floods.

Though anxious, Meghan thinks she's ready to confront Dr. Procter, but a meltdown in his office says otherwise; Ashely, now the biggest of the girls, uncovers some insight at a therapy session that may help her start losing weight.

Meghan opens her heart to Dr. Procter and gets back on track with her weight loss; living in a hotel pushes Tina to her breaking point; after Vannessa catches her sister enabling Jacob, she takes him to the doctor only to receive some upsetting news.

Ashely is anxious about her Dr. Procter appointment; Vannessa tries to get Jacob's weight loss on track; Tina and the gang move back into their home; Meghan focuses on getting wedding dress ready after announcing that she's getting married.

Meghan has a tough time finding a wedding dress that works; the girls go on a wellness retreat, and they're met with boot camp-like workouts that push them to their limits; Ashely breaks down in pain, threatening her weight loss goals.

The BFFs struggle with the rigors of Fit Farm; Ashely learns to push herself past her comfort zone; Vannessa realizes she's capable of more than she thought; Meghan faces uncomfortable truths about her upcoming wedding; Tina finally snaps.

Fit Farm is finally over; Ashely and Tina meet with Dr. Procter to hopefully get approved for surgery; Meghan moves full speed ahead with choosing a wedding venue and picking her cake; Vannessa lets off steam riding a mechanical bull.

The girls take on a monumental challenge, completing a 5K race with Dr. Procter; Meghan's bachelorette party in Savannah, Georgia, provides some fun debauchery, but a potential confrontation threatens to ruin the entire celebration.

The girls party in Savannah, Ga., for Meghan's bachelorette weekend, but the fun is interrupted by an unexpected hotel guest; when surgery day arrives, Ashely is terrified to have her second procedure; Tina's doubts throw her into a tailspin.

It's Meghan and Jon's wedding day; when she gets cold feet, she leans toward leaving Jon at the altar; Tina and Ashely are getting bariatric surgery on the same day; while Ashely is under the knife, Tina refuses to show up for her operation.

Vannessa fears her best friends, Meghan and Ashley, are hating on her for losing weight and it's put their friendship peril.

Vannessa's friendship with Meghan and Ashely is on the verge of collapse.

Ashely is faced with the hard truth that having a baby may be out of reach

Vannessa bares all in hopes of getting her skin removal surgery.

Tina struggles to adjust to her new life without her best friend: food.

Ashely's dreams of becoming a mother hit another roadblock.

Scott books a vacation in hopes of snapping Tina out of her funk.