After Chandler and Monica become engaged, Monica nearly cuts her celebration short when she sees Ross and Rachel kissing and thinks they're trying to steal her thunder.
Monica learns that her parents spent her wedding savings. Ross fumes over Phoebe's use of his apartment for her massage practice. Joey finds Rachel in possession of a trashy novel.
Monica tries to recreate Phoebe's Grandmother's secret cookie recipe. Also, while trying to bond with Monica's father, Chandler accidentally sits in his lap in a sauna. And Rachel tries to teach Joey how to sail.
Rachel debates whether she should choose a qualified woman or a handsome man as her assistant, but she ultimately picks the guy. Also, Joey's show gets cancelled, but he winds up back on Days of Our Lives. And Monica, Chandler, and Ross tell secrets about each other.
Chandler has problems smiling for his engagement picture. Phoebe and Ross date a couple who are getting divorced. Rachel asks Joey to spend time with Tag.
When Monica learns Chandler dumped a girl from his past because of her weight, she demands that he apologize. Meanwhile, Rachel and Phoebe compete to be Monica's maid of honor, and Ross and Joey fall asleep together and wake up to find that they both had a very good nap.
Ross learns that his Doctoral Thesis is in a remote area of the library where couples like to engage in sexual activities. Also, Phoebe and Rachel convince Joey to continue dating a woman because they like her, and Monica can't seem to un-invite Janice to her wedding.
Chandler admits his fear of dogs after Phoebe sneaks a dog into the apartment. Also, Ross gets so absorbed in a game to name all 50 states that he misses Thanksgiving dinner and Joey accidentally lets Tag know about Rachel's feelings for him.
After Phoebe admits that she never had a bike as a child, Ross buys her one and teaches her to ride it. Also, Rachel writes a saucy faux review for Tag that accidentally ends up at Human Resources and Monica tries to make friends with her neighbors by making candy.
Ross wants to teach Ben about Hanukkah, but can't seem to get his boy to stop thinking about Santa Claus. When Ross gives in and tries to get a Santa suit, the costume shop is all out, so he winds up dressing as an Armadillo. Also, when their apartment is ready, Phoebe tries to get Rachel to move back in with her, but after seeing that the apartment no longer has two rooms, they decide that Rachel should continue living with Joey.
When a cheesecake is mistakenly delivered to Chandler's apartment, he and Rachel eat it, then they eat the one sent to replace it. Also, Monica is upset when she's the only family-member not invited to a cousin's wedding, and Phoebe's old flame, David, returns to town for a short time.
Rachel hopes for an nice evening with Tag are dashed when they realize they forgot to send out an important work-related package. Ross and Joey get trapped on the roof. Phoebe's smoke alarm won't stop beeping. Monica and Chandler just can't seem to sleep together.
Phoebe goes above and beyond with her new office supply telemarketing job when she tries to convince the man on the other side of the phone not to kill himself. Monica finds out that all the boxes of her childhood things were ruined to keep her father's Porsche safe, but Ross's remain intact. Rachel breaks Rosita, Joey's favorite chair.
Rachel's 30th birthday causes the gang to recall their 30th birthdays...Phoebe discovered that she was really 31, Ross bought a sports car, Monica got drunk in front of her parents. Rachel realizes that she's looking for a more serious relationship and she dumps Tag.
Joey's character on Days of Our Lives comes out of his coma and gets a brain transplant from the show's diva. Also, Ross wants to play the bagpipes at Monica and Chandler's wedding, and Phoebe and Rachel fight over a guy who left his cell phone at the coffee shop.
Chandler learns that when he slept with Monica for the first time in London, she had actually been looking for Joey. Also, Joey is ordained on the Internet so he can perform Chandler and Monica's ceremony, Rachel teaches Ben how to do practical jokes, and Phoebe freaks out when she finds out that the pill she took for a headache might have side effects.
After Monica recommends a discount bridal shop to another woman, she finds herself in a fight with the woman over the same wedding dress. Also, Ross and Joey start dating the same woman.
Joey desperately wants to win the "Soapie" award he's nominated for. Ross's student claims he failed an exam because of his love for Ross. Monica comes to the realization that Chandler is the last person she'll ever be with.
Ross and Monica's beautiful cousin comes for a visit and Ross can't seem to resist her. Also, Joey is up for the lead in a big movie, but the part calls for him to be uncircumcised, so he tries to fake it. And Phoebe and Rachel plan a last-minute bridal shower for Monica.
Melissa, a college friend, shows up and Rachel is disappointed she doesn't remember a very closely shared moment. Ross and Chandler fight over who gets to wear Val Kilmer's tux.
Chandler and Monica feel under the gun as to what to put in their personalized vows so they think back to what brought them together.
Rachel's upset to find she's the only friend who hasn't driven Monica's Porsche. Chandler and Monica search Las Vegas for Chandler's dad.
Joey's big time costar has a problem delivering his lines without spitting. The pressure of the wedding gets to Chandler and he vanishes.
Joey tries to get his drunk costar through the lines so he can precide over the wedding. Ross searches for Chandler. A positive pregnancy test is uncovered, but the identity of the woman is in question.