Everybody toasts the engagement. Ross and Rachel debate a "bonus night" and when Monica catches them kissing she thinks Rachel is trying to steal the spotlight from her engagement.
Everybody begins planning for the wedding and Monica learns what her parents have done with her wedding fund; Phoebe moves in with Ross and Joey teases Rachel about her late-night reading material.
Chandler's efforts to bond with Monica's father backfire during a racquetball game. Meanwhile, Monica tries desperately to reproduce Phoebe's grandmother's secret cookie recipe.
Rachel considers hiring an inexperienced but handsome man over a better qualified woman as her exec assistant. Monica, Chandler and Ross engage in a war of secret sharing after Monica and Chandler vow to be more honest.
A non-photogenic Chandler can't get a good photo of him and Monica. Rachel plans to get closer to her hunky assistant by encouraging him to hang out with Joey but the plan sours when he picks up on Joey's moves.
Rachel and Phoebe compete to be Monica's maid-of-honour. Joey and Ross find themselves in awkward positions after a nap whilst Monica insists Chandler apologise to an ex for dumping her because of her weight gain.
Monica mistakenly invites Janice to her wedding so she and Chandler must find a way to amend the error. Ross is proud his thesis is in the library but upset it's in a section so deserted, students go there to make out.
Joey may have ruined Rachel's chances with Tag when he opens his mouth during Thanksgiving dinner. Phoebe sneaks a dog into the apartment which makes Chandler extremely nervous.
When Phoebe tells how she was too poor to have a bike as a child, Ross goes out and buys her one. Monica decides to make candy and leave it outside her door as a way to meet the neighbours.
Ross' attempts to introduce Ben to Hanukkah are thwarted by the boy's like of all things Christmas. Phoebe prepares to move back into her refurbished apartment and will stop at nothing to get Rachel to go with her.
Phoebe's old flame David visits from Russia for an evening of romance. Rachel and Chandler swipe deliveries of a particularly tasty cheesecake from their neighbour's doorstep.
Rachel and Tag's first night together is put on hold when they realise they forgot to overnight an important package. Ross and Joey are stuck on the roof and Phoebe can't disable a relentlessly beeping smoke alarm.
On her first day as a telemarketer, Phoebe encounters a distraught man who is determined to end his life. Monica and Ross discover their parents are selling their house and Rachel breaks Rosita, Joey's favourite chair.
When Rachel turns 30, the gang reminisce about their experiences with the big 3-0. Phoebe discovers she's 31, Ross buys a sports car to look cool, Monica gets drunk in front of her parents and Rachel breaks up with Tag.
Ross plans a surprise for Monica and Chandler's wedding that is less than desirable. Joey tells a cast member she will be killed off so his character can survive and Phoebe and Rachel fight over a guy in Central Perk.
Joey gets ordained through the Internet so he can officiate Monica and Chandler's wedding. While trying to help out Joey with the service, Monica reveals something about the London trip that leaves Chandler floored.
Monica regrets telling a woman about a discount bridal shop when they end up fighting over the same dress. Meanwhile, Joey and Ross discover they're dating the same girl.
Nominated for an award, Joey resorts to theft when he doesn't win. A student convinces Ross he failed his midterm because he's in love with Ross and Monica realises Chandler will be the last man she'll ever sleep with.
Joey auditions for a big role which will require him to appear naked but the part calls for an uncircumcised man. Rachel and Phoebe plan Monica's shower and Ross finds his attraction to his visiting cousin unsettling.
A college friend with whom Rachel shared an embarrassing and passionate moment shows up at Central Perk. Chandler and Ross argue for possession of Val Kilmer's tuxedo and Joey drives Monica crazy over the wedding schedule.
With Chandler and Monica dealing with their own problems in writing their vows, they turn to memories of past events. In the end, the only problem is who will be saying their vows first.
Monica's Porsche shows up again and causes conflict when Rachel finds out she's the only one who hasn't driven it. Meanwhile, Chandler and Monica go off to Vegas to invite Chandler's estranged father to the wedding.
During the rehearsal dinner the night before the wedding, a panicked Chandler disappears. Joey is starring in a movie with a prestigious actor who has a regrettable spitting problem.
Joey encounters problems trying to get off the movie set to officiate the wedding. Meanwhile, Ross desperately searches for the missing Chandler as the girls distract an unsuspecting Monica.
A hung-over Ross and Rachel are shocked to discover they are husband and wife. Monica and Chandler search the Strip for signs that they are altar-bound whilst Joey and Phoebe have a cross-country adventure.
Monica and Chandler decide to move in together, leading Rachel to believe that all three of them will be roommates. Phoebe discovers that Ross hasn't annulled his marriage to Rachel.
Monica and Chandler disagree over how to redecorate Rachel's old room. Joey advertises for a specific type of roommate. Ross is unwilling to accept that he is still in love with Rachel.
Ross is asked to give a series of lectures at NYU. Phoebe learns from her psychic that she only has a week to live. Learning his health insurance has lapsed, a hernia-bearing Joey tries to pick up a quick acting gig.
Joey finds the keys to a Porsche in Central Perk and while trying to find the owner winds up pretending he owns the car. Meanwhile, Chandler, Monica and Phoebe babysit Alice and Frank's triplets.
Chandler and Monica are moving in with each other, which means Rachel is moving in with Phoebe and Joey will be without a roommate. Ross doesn't want to help with the packing so he stays at home with Ben, or so they think.
Rachel regrets asking Phoebe to jog with her when her uncoordinated movements attract unwanted attention. Chandler decides to surprise Monica by cleaning the apartment but forgets where everything goes.
After bleaching his teeth for a date, Ross discovers they now glow in the dark. Chandler convinces Joey that Janine is trying to take over his apartment and Phoebe makes out with the copy guy at Rachel's office.
Monica's parents come for Thanksgiving, which is a problem because Monica never told them Chandler was living with her. Joey and Ross can't wait for dinner to end so they can go to Janine's "Thanksgiving with 'models".
Janine gets an invitation to dance on "Dick Clark's New Year's Rockin' Eve" and invites Joey, Monica and Ross along. Monica and Ross are ecstatic about this as it gives them a chance to finally use their 'routine'.
Rachel orders an apothecary table from Pottery Barn, which is a problem because Phoebe hates the mass-producing company. After a double date, Janine tells Joey she thinks Chandler and Monica are boring.
Chandler and Ross fight over ownership of a joke published in Playboy. A wayward remark of Phoebe's leads to trouble between the girls and a broke Joey starts working at Central Perk.
Joey gets in trouble for giving female customers free food at Central Perk. A sick Monica desperately tries to convince Chandler she's not sick and Rachel's sister Jill comes to town after her father cuts her off.
Chandler admits that he hasn't cried since he was a child. Phoebe discovers that Ursula is starring in porno movies using her name and Rachel desperately tries to stop Ross and Jill from starting a relationship.
Barry and Mindy's impending divorce prompts the gang to fantasise about what their lives might be like if they'd all taken different courses.
Carol and Ross decide to have a threesome to spice up their marriage. Rachel goes to Joey's and kisses him. Chandler and Monica have sex and end up together anyway. Susan meets Carol and Rachel catches Barry cheating.
Joey needs money for new headshots and tries to enter a medical study. The problem being the study is for twins. Rachel and Phoebe are taking a self-defence class but Ross tries to give them a lesson in Unagi instead.
Ross gets his student evaluations and one student writes he's hot. Even though it could cost him his job he considers dating her. A fire starts in Phoebe and Rachel's apartment forcing them to move in with Monica and Joey.
Phoebe, Monica and Chandler compete to get Rachel a date for a charity ball. Joey's fridge is broken and he tries to cajole his friends into helping him buy a new one.
Joey gets an audition for the lead character in a new TV show. When the audition is rescheduled, Chandler takes the message but forgets to tell Joey.
Ross recruits his friends to go with him on his first meeting with Elizabeth's father, who ends up hitting if off with Rachel. Joey may be fired from his sitcom when he has a fight with C.H.E.E.S.E.'s operator.
When Paul threatens to fire Ross if he doesn't stop seeing his daughter, Ross and Elizabeth take a trip up to her dad's mountain cabin. Unfortunately, Paul has the same idea and takes Rachel at the same time.
Chandler and Phoebe shop for a ring for Monica. Chandler finds the perfect one but Phoebe accidentally lets it get away.
Chandler plans to propose to Monica at dinner but his plans go awry when Richard shows up. Phoebe and Joey join Rachel at a charity auction.
Monica struggles to decide between Richard and Chandler. Meanwhile, Rachel and Phoebe discuss their backup plans if they are not married before the time they're 40.
Ross chooses between Rachel and his girlfriend Bonnie. Phoebe struggles with the revelation of her mother's friend being her real mother. Monica gets stung by a jellyfish, forcing Chandler and Joey to relieve her pain.
Phoebe believes her adoptive mother's spirit resides in a cat that jumped into her guitar case in Central Perk. Monica goes on a date with Rachel's hunky high-school boyfriend and Joey takes stupidity to a new level.
Monica caters a party for her mother who still doesn't know how to talk to her daughter. Chandler's encounter with Rachel's boss leads to an embarrassing situation and an encyclopaedia salesman takes advantage of Joey.
Joey attempts ballroom dancing in order to help Monica and Rachel keep their illegal sublet. Phoebe is attracted to one of her massage clients and Chandler has trouble attempting to quit a gym.
Chandler hits on a woman at Central Perk, not realising she's Joey's new girlfriend. Ross and Rachel play the jealousy game in their relationships & Phoebe tries to catch a cold to make her voice and singing more sexy.
Ross's new girlfriend seems nearly perfect, until he discovers her apartment is incredibly dirty. Chandler helps Joey pick out a thoughtful present for Kathy's birthday whilst Phoebe helps Monica cater a funeral.
Chandler must decide between the girl of his dreams and his best friend when he and Kathy share a kiss. Needless to say Joey is not happy to find out and nobody wants to tell Ross how awful his keyboard playing is.
Chandler agrees to spend Thanksgiving in a shipping crate as penance for kissing Kathy and the gang decide on Secret Santa gifts. Monica injures her eye preparing dinner & gets a shock when she goes to the eye-doctor.
Ross and Chandler are very excited about their "party wizard" college friend coming to town, until he cancels. Joanna squashes Rachel's chance of a promotion and Monica fills in as a food critic for a small newspaper.
Ross must decide whether to continue dating a girl he must travel two-and-a-half hours to see. Monica, who is being treated poorly by her new co-workers, hires Joey just so she can fire him and show who's the boss.
Phoebe considers her options when her brother & his wife ask her to carry their child. Joey works as a tour guide at Ross' museum & Chandler seeks advice when he fears he'll not live up to Kathy's sexual expectations.
Joey and Chandler guess all the items in Monica and Rachel's bag which starts a competition between the boys and the girls, a question-answer game created by Ross. Phoebe goes to the doctor for the embryo implants.
Chandler can't deal with Kathy simulating sex, half-naked, in a play, with a handsome man. After Rachel is demoted to personal shopper she's in a hard place upon discovering she likes a customer who won't ask her out.
After a three-day fishing trip Joey's in a jam when he doesn't have time to take a shower before getting to a movie set. Rachel sets Ross up with her boss's niece & the girls take a despondent Chandler to a strip club.
Ross takes on a rugby challenge from some old friends of Emily's from England in order to impress Emily. Meanwhile, Chandler runs into Janice and tries to avoid restarting his relationship with her.
With two days left until Emily's departure back to England, Rachel throws a fake party for her just so she can see Joshua outside of work, and a pregnant, vegetarian Phoebe craves meat.
Chandler and Joey find an unscrambled porn channel on their TV and refuse to turn it off for fear of losing it. Meanwhile, Phoebe receives some surprising news and Monica helps Ross come to a decision regarding Emily.
A very pregnant Phoebe is asked to name one of the triplets. Emily offers to show Susan around London and Rachel tries to prepare the perfect evening for her and Joshua.
Monica and Rachel are tired of their new apartment and try to bribe Joey and Chandler into giving up their apartment for Knicks tickets. Ross wants Emily to stay as she prepares to leave again.
A snoring Joey is keeping Chandler awake, forcing Chandler to take him to a sleep clinic. Ross asks Monica to pick up Emily's wedding dress for him and Monica just can't help herself in trying it on for a bit.
Ross and Emily discuss who to invite to their wedding. Emily thinks it's odd to invite Rachel but Ross sends her an invitation anyway. A very pregnant Phoebe can't go & Rachel wrestles with the idea but decides not to.
Phoebe is tired of being pregnant and experiencing major mood swings. Ross chooses Joey as his best man, so Joey begins planning a bachelor party while the girls decide to throw Phoebe a baby shower.
The gang, minus Phoebe and Rachel, travel to London to prepare for Ross' wedding. While in London, Chandler gets annoyed with Joey's overexcited antics and Monica tries to give advice to Emily.
Phoebe tries to get in touch with someone to warn them that Rachel's on the way to the wedding. Meanwhile, Ross and Emily's parents meet at the wedding rehearsal dinner.
In the aftermath of his Freudian slip, Ross tries to rescue his marriage with Emily. Meanwhile, Chandler and Monica try and find a moment alone in order to continue their affair while overseas.
Ross continues to try and mend his marriage to Emily. Chandler accidentally kisses Monica in front of everyone before leaving for work and Phoebe starts getting irritated by everyone's London stories.
Phoebe is rushed to hospital for the birth of her brother's triplets. While there, Joey winds up with severe sympathy pains that turn out to be kidney stones & Rachel tries to set Monica up on a date with a male nurse.