David agrees to sub in for the annual baseball game, and Moira runs a rehearsal that pushes Stevie over the edge.

Georgie and Mandy get upset when Audrey disciplines CeeCee without their permission.

When Courteney learns that an AI company is looking at Heådltston as a potential site for its new data center, she goes full out to win them over, hoping to get much-needed money and sponsorship for her team.

With Alan still depressed over his breakup with Lindsey, Walden sends him off to get a complete makeover. Even with his new weird look, Alan manages to hook up with a dim-witted blonde. She takes him home, where Alan discovers she has a 92-year old comatose husband.

Walden has a dilemma when he finds he's more attracted to the grandmother of a beautiful but ditzy young woman than the woman herself. Also, Jake reveals he is being transferred to Japan so Alan decides a road trip is on order.

Judith's sinister-but-sexy sister, Liz, plans to attend Jake's 11th birthday party. Alan asks Charlie to behave. But when Liz arrives, she ignores Charlie and flirts with Alan instead. Liz proceeds to cause a commotion between her sister and her ex-brother-in-law.

Jake becomes a brooding musician when he continuously plays "Smoke on the Water" on his guitar with an ever-present grumpy attitude. Finally, Judith convinces Alan that Jake needs professional assistance, and they enlist the help of Dr. Linda Freeman.

Charlie and Laura, Alan's divorce attorney, begin a relationship. Laura doesn't care that he dates other women, but she does have one request: Charlie must be available for her whenever she wants him. Charlie loves the idea, until Laura takes advantage of the situation.

Caroline is impressed with not only the dessert bar renovations but also with the contractor on the job. Meanwhile, Max rushes to see Randy when she learns he is in a NYC hospital, and Sophie joins a mothers group that cares more about partying.

Caroline is excited to go on her first date with Bobby, but she gets nervous when she realises Max will be in charge of the dessert bar solo for the first time. Meanwhile, Sophie and Oleg decide to mix things up and try going out on a date instead of staying in.

As Caroline prepares for her third date with Bobby, she decides to spice things up by taking a burlesque class accompanied by a reluctant Max, who decides to abstain from sex after her breakup with Randy. Also, Max decides to go golfing with Han.

Sparks fly when Leonard and Sheldon's mothers finally meet.

Sheldon pushes Leonard and Penny to set a date.

After driving to Vegas to get married, Penny struggles with Leonard’s confession that he kissed another girl. Also, Sheldon doesn't know how to act after Amy pushes pause on their relationship.

Chandler hires a maid, whom Monica suspects is stealing her clothing. Ross tries to get Rachel an apartment in his building but the woman living there isn't in a hurry to die; plus Joey wants Rachel to stay with him.

Rachel prepares to have dinner with her dad to announce her pregnancy. Chandler discovers Monica had a stripper at her bachelorette party, resulting in Monica trying to make it up to Chandler by getting him a stripper.

Monica invites an old friend from high school for Thanksgiving dinner, unaware that he started a "We Hate Rachel" club with Ross. Meanwhile, Chandler and Phoebe pretend to watch football to avoid helping in the kitchen.

Chandler is peeved when Monica splurges on an expensive pair of boots. Phoebe learns Ross' and Sting's children attend the same school and angles to meet the celebrity and get concert tickets.

Judith's sinister-but-sexy sister, Liz, plans to attend Jake's 11th birthday party. Alan asks Charlie to behave. But when Liz arrives, she ignores Charlie and flirts with Alan instead. Liz proceeds to cause a commotion between her sister and her ex-brother-in-law.

Jake becomes a brooding musician when he continuously plays "Smoke on the Water" on his guitar with an ever-present grumpy attitude. Finally, Judith convinces Alan that Jake needs professional assistance, and they enlist the help of Dr. Linda Freeman.

Charlie and Laura, Alan's divorce attorney, begin a relationship. Laura doesn't care that he dates other women, but she does have one request: Charlie must be available for her whenever she wants him. Charlie loves the idea, until Laura takes advantage of the situation.

Caroline is excited to go on her first date with Bobby, but she gets nervous when she realises Max will be in charge of the dessert bar solo for the first time. Meanwhile, Sophie and Oleg decide to mix things up and try going out on a date instead of staying in.

As Caroline prepares for her third date with Bobby, she decides to spice things up by taking a burlesque class accompanied by a reluctant Max, who decides to abstain from sex after her breakup with Randy. Also, Max decides to go golfing with Han.

Sparks fly when Leonard and Sheldon's mothers finally meet.

Sheldon pushes Leonard and Penny to set a date.

After driving to Vegas to get married, Penny struggles with Leonard’s confession that he kissed another girl. Also, Sheldon doesn't know how to act after Amy pushes pause on their relationship.

Chandler hires a maid, whom Monica suspects is stealing her clothing. Ross tries to get Rachel an apartment in his building but the woman living there isn't in a hurry to die; plus Joey wants Rachel to stay with him.

Rachel prepares to have dinner with her dad to announce her pregnancy. Chandler discovers Monica had a stripper at her bachelorette party, resulting in Monica trying to make it up to Chandler by getting him a stripper.

Monica invites an old friend from high school for Thanksgiving dinner, unaware that he started a "We Hate Rachel" club with Ross. Meanwhile, Chandler and Phoebe pretend to watch football to avoid helping in the kitchen.

Chandler is peeved when Monica splurges on an expensive pair of boots. Phoebe learns Ross' and Sting's children attend the same school and angles to meet the celebrity and get concert tickets.

Alan succumbs to Judith's demand that they take Jake to therapy every week but he doesn't realise that he, too, is having issues ... with sleepwalking. Evelyn hints to Charlie that Alan used to sleepwalk as a child, leading Charlie to come up with a clever new solution.

When Jake imitates one of Charlie's sexist remarks in front of Judith's support group, the women decide that Charlie's home is an unfit environment for the child. Charlie must cajole the support group in order to win his nephew back.

One of Charlie's many women fears she's pregnant, and Charlie is relieved when the lady finds out she's not. When Alan realises that this is not Charlie's first pregnancy scare, he suggests a permanent solution for Charlie ... a vasectomy.

When Bobby invites Caroline to a party to meet his family, she is eager to make a good impression but isn't prepared for the torch that his mother and sisters still carry for Bobby's ex-girlfriend.

When Han's therapist suggests that Max needs to confront her daddy issues, she reluctantly heads to Rhode Island to track down her birth father with the diner gang in tow.

Max reads a text on Bobby's phone suggesting he has a child with his ex, Jessica, so she and Han go undercover as an engaged couple to Jessica's wedding planning shop to find out the truth.

Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny's mind at ease. Also, Sheldon films a special episode of 'Fun with Flags' after his breakup with Amy

The guys' science skills are put to the test when they get a flat tire during Leonard's bachelor party weekend in Mexico. Also, the girls force Penny to finally tell her family that she eloped with Leonard.

Sheldon learns of an impending change in his living arrangements and decides to revert back to 2003, a simpler time before he met Leonard and Penny.

Ross panics when Mona gets an idea to send out a holiday card from the two of them. Chandler's newly divorced boss tries to get Monica and Chandler to come out to dinner with him and Rachel's hormones start acting up.

Phoebe gets Monica and Chandler an arcade game for a wedding present, which leads to some heavy competition. Joey takes Rachel on a pretend date as she can't have a normal relationship due to her pregnancy.

Monica turns Chandler on to the concept of a bath to relax, complete with scented oils and candles. Ross and Rachel toss baby names back and forth as Monica, Chandler and Phoebe discover Joey still likes Rachel.

While giving Monica a massage, Phoebe becomes a little unsettled when Monica starts making sexual noises. Chandler realises he's never seen what's in the closet by the bathroom and tries to break in.

Deacon and Allison make an enemy of Kethan and commit to a life on the run. As Esme and Alfie both grow suspicious of their behaviour, Allison takes the pregnancy test that will reveal if it's all been for nothing.

Esme helps Deacon and Allison make their escape after Kethan and Alfie join forces to catch them. Will they get away? Will their relationship survive? What is Allison about to reveal that changes everything?

Charlie's long-lost daughter Jenny shows up.

Jenny moves in with Evelyn.

Johnny and Moira's afternoon plans are interrupted when they accidentally hit a cat. David runs into an old colleague at the flea market whose new business bears a striking resemblance to Rose Apothecary.

When Bobby invites Caroline to a party to meet his family, she is eager to make a good impression but isn't prepared for the torch that his mother and sisters still carry for Bobby's ex-girlfriend.

When Han's therapist suggests that Max needs to confront her daddy issues, she reluctantly heads to Rhode Island to track down her birth father with the diner gang in tow.