Having survived yet another brush with death, Tammy recovers at rehab, but a new scare threatens her life; the family adjusts to life without Tammy; Amy's big surprise stuns everyone.

Tammy's seemingly good progress inspires Amy to visit, reuniting the siblings for the first time in months; Amanda begins a new chapter in her life; Amy learns she's at risk of serious complications if she doesn't get her eating under control.

Tammy hits a tipping point at rehab, and more bad news from back home sends her into a downward spiral; Chris gets a reality check during a check in with Dr. Smith; the family says goodbye to a beloved family member.

After finding out Tammy's been robbed, Misty and Amanda visit to break the news in person; while Chris pushes ahead toward his surgery goal, Amy has a setback and is rushed to the ER; with her sisters by her side, Tammy faces the results of her weigh in.

Tammy struggles to cope after surviving a near-death experience; Amy realizes being an overweight mom may prove to be too much; Chris is desperate to get rid of excess skin; Amanda offloads some dead weight of her own.

Amy feels from giving birth and finding out Michael has COVID-19; after 20 years, Chris gets back on the horse; Tammy is almost at the finish line for surgery approval, but worries she won't pass her final assessments.

After years of struggling, Tammy finally has her weight loss surgery, but things are not as straightforward as expected.

Tammy wants to come home, but a setback causes a major blowup between her and the family.

Tammy announces her engagement to the family and reveals that her big day is only two weeks away; Amy takes up maid of honor duties; the family wonders if there's another reason Tammy is rushing down the aisle.

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As Tammy heads home after 14 months in rehab, she's forced to make the most difficult decision of her life. Fed up with not having help, Amy feels her marriage is starting to unravel. Amanda and Misty reveal they're getting bariatric surgery.

Tammy hosts a housewarming party and has a few choice words for her mom; Amy's world is turned upside down when she finally confronts Michael over his lack of help with raising their two boys; meanwhile, Caleb hasn't been honest with Tammy.

After the blowout with Michael, Amy makes the hardest decision of her life; Chris and Tammy have a long-overdue appointment with Dr. Smith; worried about surgery, Amanda and Misty do a last-minute cleanse to sweat out nicotine.

Amanda and Misty get big news and take a major step in their health journey; Amy and Tammy blow off some steam; Amy gets some devastating news from her lawyer that sends her reeling.

Amy faces Michael in court at their first divorce hearing. Chris finds an unusual way to get healthy food. Tammy explores the possibility of having kids. Later, Tammy heads to rehab for a recon mission after learning some information about Caleb.

Caleb surprises Tammy with a romantic dinner date, but it goes south when Tammy learns what's on the menu. The Slatons attend a Zumba class together, but Amy's lack of self-care leads to a meltdown that has the whole family feeling déjà vu.

The family preps for their very first beach vacation, and Tammy hits some major milestones. While everyone flies, Amy opts for a nine-hour car ride which leaves her and the boys cranky. Then, Chris gives Amy some tough love.

Amanda reels after leaving dinner; Chris crosses something off his bucket list; Tammy tries to have fun but misses Caleb; fed up with her siblings critiquing her, Amy reaches her boiling point and explodes.

Amy is ashamed of her behavior in Florida and wants to make amends, but she worries Amanda won't accept her apology; when Tammy gets some devastating news, her whole world is turned upside down, and her family rallies behind her in support.