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Part 4. Meri and Kody talk about their dark times in Vegas. Kody accuses the other wives of using Robyn as a scapegoat. Meri is asked about her new man.

Follows four overweight, expectant mothers with morbid obesity as they suffer health crises and relationship breakdowns whilst striving to deliver healthy babies.

Elizabeth's head is covered with giant cauliflower-shaped bumps. Jamaal has been growing a strange knob on his bottom since he was just a boy.

Dr. Lee meets Dot, who has a large lump growing on her inner thigh. Plus, a new doctor helps 68-year-old Tim with his severe rhinophyma.

Katrina suffers from oozing, smelly boils that have appeared all over her body. Plus, a patient with Neurofibromatosis seeks help from Dr. Lee.

Mike gained over 700lbs after his football dreams were dashed by multiple concussions. Now he must find a new purpose in life to avoid succumbing to pain and regret.

Charlene returns for her fitting but will her out-spoken mum approve of the dress? Heidi goes for a non-traditional gown but her entourage aren't convinced.

Bride Sally is a self-proclaimed 'emotional wreck', who is in desperate need of Jo and Al's help. They head off to the wedding to support her.

Jo and Al reunite with bride Joanna and her feisty dad at her final dress fitting. And, Kimberley's love of 'Beauty and the Beast' extends to a tattoo.

Bride Marta's mum and sister have flown in from Spain to see the final fitting. But after breaking her ankle, can Jo and Al help Marta on her big day.

Molly is mortified when she reviews her wedding photos and sees that Mike either has his mouth open or his eyes closed in every single shot.

Mike and Molly decide they're ready to start trying for a baby. And Carl gets upset when he learns that Molly is still spending time with Christina.

Mike is put in an uncomfortable situation when his mom starts dating his boss, despite his many reservations.

The Geezer Bus And A New Model. Sheldon refuses to ride in a car after getting into an accident with Meemaw. Meemaw is forced to take the church shuttle.

When the IRS accuses Sheldon of making a mistake, he stops at nothing to prove them wrong. Meanwhile, Dale is forced to get a colonoscopy.

Sheldon faces consequences after installing a pirated computer game. Mary and Meemaw take Brenda out for Girls Night, and George watches Billy.

Raj moves in with Leonard and Penny, and a period of adjustment begins, while usually self-centred Sheldon shows surprising interest in Amy's work.

Sheldon is pushing himself with too many collaborations. Bernadette's maternity leave is running out, and she must face going back to work.

Leaving the baby in daycare proves to be tough for Bernadette, and geologist Bert digs up a girlfriend, but some colleagues think she's a gold digger.

Leonard isn't thrilled when Penny considers taking a new job offered by her ex-boyfriend, Zack.

Leonard, Sheldon and Wolowitz celebrate the completion of their top-secret military project, until an unpleasant surprise leaves their heads spinning.

Sheldon's former admirer, Dr. Ramona Nowitzki, turns up while Amy is visiting Princeton, and the gang is extremely concerned.

What did she say? Amy answers Sheldon's marriage proposal. Meanwhile, Howard and Bernadette struggle with some unexpected news.

Leonard's job is at stake when he gives an embarrassing radio interview which angers the university and the entire physics community.

With the house feeling crowded, Molly decides to have a yard sale, while Mike and the guys take Carl on a fishing trip.

When Mike gets sick for Thanksgiving, Molly is excited that she won't have to cook until Vince invites his brother, Frankie, to town.

Molly encourages Mike to pursue a detective position on the force, but the stress of taking the qualification exam starts to take a toll.

Sheldon is at odds with Paige once again when she considers enrolling at East Texas Tech. Mary seeks the advice of June when looking for a change.

The Coopers discuss the possibilities of black holes and alternate universes when Dr. Sturgis comes over for dinner.

Missy's first heartbreak triggers a series of events that lead the Cooper family to the brink.

Amy tries to convince Sheldon that he has a more laid-back side, meanwhile, Raj and Stuart compete to win the heart of Bernadette's new co-worker.

Wolowitz and Sheldon bond over their relationships with their disappointing fathers. And Leonard's mum finds a new best friend in Penny.

Sheldon and Raj confide in Bernadette when they can't handle Amy and Howard working together. Penny and Leonard learn new ways to deal with Sheldon.

Sheldon goes head-to-head with Wil Wheaton. Penny takes care of Halley when Bernadette and Howard are both on bed rest.

Sheldon and Bert collaborate on a research project, while Penny and Bernadette coach Koothrappali on how to navigate his relationship with Ruchi.

Leonard and Howard learn Sheldon went to work with the military. Bernadette suspects Ruchi is trying to steal her job.

The guys cut Sheldon out of a potentially valuable Bitcoin investment. Also, an old video reveals a secret about Leonard and Penny's relationship.

Sheldon and Amy try to eliminate stress from wedding planning using maths. Raj realises his best friend is actually hurting his confidence.

Lauren. After three years confined at home, Lauren turns to Dr. Now for help, hoping to overcome challenges and reclaim her life.

Ty has recently come out as gay, but he is insecure about his weight. Can he finally slim down and let his inner drag queen shine.

22-year-old Tierra has lumps on her ears that require medical attention. Plus, Dr. Zoe helps Dr. Lee with a patient with numerous head bumps.

Dr. Lee meets a patient with a big bump on his forehead. Plus, 30-year-old Shelby has developed mysterious bumps all over her body.

Anthony's thigh lump blocks his fresh start, while Mary's 70-year-old bump shocks doctors. Plus, Sultana's rash threatens her success and confidence.

James needs to control his love for food in order to survive, but a death in the family sends him retreating back to the comforts he knows.

Tucked away in rural Essex is a boutique dedicated to curvy brides. Jo Cooke and Alison Law offer big brides-to-be the chance to look and feel amazing.

Tanya and fiancée Zsyzsanna break tradition by helping each other find their dresses. Plus, Jo's friend Jade visits the boutique for an important fitting.

Michelle is insecure about her excess skin and dreading seeing herself in a wedding dress. Plus, will bride-to-be Lauren still love her sleeveless gown.

Bride Laura made some drastic alterations to her dress and now it's a mess! Former basketball Paralympian Zoe needs a dress that's both beautiful and suitable.

With the house feeling crowded, Molly decides to have a yard sale, while Mike and the guys take Carl on a fishing trip.

When Mike gets sick for Thanksgiving, Molly is excited that she won't have to cook until Vince invites his brother, Frankie, to town.

Molly encourages Mike to pursue a detective position on the force, but the stress of taking the qualification exam starts to take a toll.

Sheldon is at odds with Paige once again when she considers enrolling at East Texas Tech. Mary seeks the advice of June when looking for a change.

The Coopers discuss the possibilities of black holes and alternate universes when Dr. Sturgis comes over for dinner.

Missy's first heartbreak triggers a series of events that lead the Cooper family to the brink.

Amy tries to convince Sheldon that he has a more laid-back side, meanwhile, Raj and Stuart compete to win the heart of Bernadette's new co-worker.

Wolowitz and Sheldon bond over their relationships with their disappointing fathers. And Leonard's mum finds a new best friend in Penny.

Sheldon and Raj confide in Bernadette when they can't handle Amy and Howard working together. Penny and Leonard learn new ways to deal with Sheldon.

Sheldon goes head-to-head with Wil Wheaton. Penny takes care of Halley when Bernadette and Howard are both on bed rest.

Sheldon and Bert collaborate on a research project, while Penny and Bernadette coach Koothrappali on how to navigate his relationship with Ruchi.

Leonard and Howard learn Sheldon went to work with the military. Bernadette suspects Ruchi is trying to steal her job.

The guys cut Sheldon out of a potentially valuable Bitcoin investment. Also, an old video reveals a secret about Leonard and Penny's relationship.

Sheldon and Amy try to eliminate stress from wedding planning using maths. Raj realises his best friend is actually hurting his confidence.

Mike dresses as Santa but feels more like the Grinch when he can't contain his frustrations over Molly's Christmas spending.

In an effort to boost their chances of getting pregnant, Molly encourages Mike to join her in giving up caffeine and eating healthier.

Mike risks losing his eyebrows when he starts construction on the basement for he and Molly, while Carl invites Samuel to move in with him.

Sheldon and Missy both run away from home, while Mary gets some upsetting news about her husband, George.

Sheldon encourages Missy to question the Bible. Meemaw determines to catch George Sr. in a lie, and Mary helps Pastor Jeff search for a youth pastor.

While Sheldon tries to convince Dr. Sturgis to return to the university, Georgie upsets the family when he makes a life-changing decision.

Sheldon and Howard plan birthday celebrations for Amy and Halley. Leonard spirals out about his lack of accomplishments.

Sheldon and Amy subject their friends to a series of experiments to choose the best man and maid of honour. And Penny reveals her true feelings.

Amy and Leonard bond during a series of experiments. Bert replaces Howard in Footprints on the Moon, and Sheldon finds Penny a source of inspiration.

Raj learns the woman he's dating has a very upset husband. Sheldon rents his old room for a quiet place to work.

Wil Wheaton offers Amy a role on the new 'Professor Proton Show,' and Penny thinks the female protagonist in Leonard's novel is based on her.

All Bernadette's friends try different tactics to get labour started. Amy accidentally reveals she's already chosen their son's name.

Leonard tries to secure the perfect wedding venue for Sheldon and Amy. Bernadette and Howard have a hard time deciding who should go back to work.

Bill Gates' company wants to partner with Penny's pharmaceutical company. Leonard, Raj and Howard do everything in their power to meet him.

A US Army colonel and a civilian woman supervising him must track down stolen Russian nuclear weapons before they're used by terrorists.