When the friends discover that Ugly Naked Guy is moving out of his apartment, Ross leaps at the opportunity to get his own place again. Phoebe finds out about Monica and Chandler's relationship, and tries to get them to reveal the truth by seducing Chandler.

Erica goes into labor and the new parents, Monica and Chandler, get a bit more than they bargained for. Meanwhile, Joey gets them a housewarming gift - Chick Jr. and Duck Jr., who unfortunately get trapped inside the foosball table. Also, after their night together, Ross realizes that he's still in love with Rachel and doesn't want her to leave. Other friends convince him to go after her and Phoebe races Ross to the airport in a bid to stop Rachel from leaving for Paris. The six friends prepare to say goodbye and embark on the next chapters of their lives.

Phoebe's uterus is examined for implantation of the embryos. Meanwhile, a seemingly harmless game between Chandler and Joey against Monica and Rachel escalates into a full blown contest where the stakes are raised higher and higher.

After getting his big break, with Days of Our Lives, Joey pays Chandler back. Monica is unemployed and hard up for money. Monica and Rachel's prom video reveals Monica's former girth, Rachel's former nose and the way Ross has always felt about Rachel.

Monica and Chandler return from their honeymoon with stories of a couple that they met on the flight back, but soon discover that the couple gave them a wrong number. Meanwhile, Ross and Rachel tell everyone about the night they were together, however, their stories differ as to who made the first move. While Ross emphatically defends his side of the story, he accidentally reveals that he has the encounter on videotape. Unsurprisingly, everyone wants to see it.

Monica invites Will, an old high school friend of her and Ross over for a Thanksgiving dinner, unaware that he isn't too fond of Rachel. Meanwhile, Joey vows to eat an entire turkey by himself, and Chandler and Phoebe pretend to watch a football game in order to avoid helping in the kitchen.

It's Thanksgiving and Monica's parents are coming to visit, which is a problem because, not only they do not like Chandler, they also don't know that he and Monica are living together. Rachel is tasked with making a Thanksgiving dessert, but she does so with mixed results. Meanwhile, Joey and Ross are eager to finish the dinner and leave, because they want to go to a Thanksgiving party with Janine and her dancer friends.

When Janice asks the gang if any of them have ever slept together, the friends flash back to a time three years before.

Ross tries to prevent Rachel from learning his disturbing secret. She finds out anyway and they go back to her apartment to have a fight. The other four friends are trapped in Monica's bedroom, forced to listen in.

Chandler agrees to spend Thanksgiving in a shipping crate as penance for kissing Kathy. The gang decides to give each other Secret Santa gifts. After Monica gets ice in her eye, she ends up visiting Richard's son, who is as attracted to Monica as his father was.

Although the Thanksgiving meal is great, Chandler is still moody over his parent's divorce during the holiday when he was a boy and Ross is depressed about his second divorce. The group reminisces about their worst Thanksgivings in order to cheer them up, and Monica's worst memory is revealed.

Joey starts to get uncomfortable with protecting Monica and Chandler's secret, especially when it places him in embarrassing situations with the rest of the group. Meanwhile, Ross becomes enraged at work when someone swipes his turkey sandwich. Phoebe and Rachel enroll in a literature class.

With the New Year, the friends make New Year's resolutions. Ross resolves to try a new thing every day. Chandler resolves to not make fun of his friends for a week. Joey resolves to learn how to play the guitar, with Phoebe as his teacher. Rachel resolves to give up gossiping. Chandler nearly goes insane holding it all in. Ross is stuck in a sticky situation at his date's apartment, in constricting and hot leather pants. Rachel discovers a big secret (Monica and Chandler) that threatens to spoil her resolution.

Speculation regarding the father of Rachel's baby leads to a misunderstanding when Joey discovers a red sweater left behind in a one-night stand Rachel had. Meanwhile, Chandler and Ross search for the disposable cameras left behind at the wedding and Monica goes on a present-opening binge.

A power outage leaves Chandler stranded in an ATM vestibule with Victoria's Secret model Jill Goodacre, whom he desperately tries to impress, Ross tries to ask Rachel out on a date, and Joey learns that Monica used to be infatuated with him.

A drunken Rachel is persuaded to call Ross and reveal her feelings for him on his answering machine. Now, Ross must make a decision between her and Julie. Meanwhile, Monica finds work as Chandler's personal trainer and Phoebe has a hard time trying to get her boyfriend to have sex with her.

Monica decides to hold a surprise birthday for Rachel, but everything goes wrong when Rachel's estranged parents turn up unexpectedly. The party then splits into two factions, but complications inevitably ensue.

In a race against the clock, a stressed Ross tries to get the gang dressed and ready for a black-tie benefit at the museum while Joey and Chandler clash over personal belongings and personal space.

Emotions become the feast of the day when the gang plays a game of touch football on Thanksgiving. Joey and Chandler argue over who gets to date a model while Ross and Monica argue over winning in a case of sibling rivalry.

Ross chooses between Rachel and his bald-headed girlfriend Bonnie. Phoebe struggles to deal with the revelation that her mother's friend is actually her mother. Monica gets stung by a jellyfish, forcing Chandler and Joey to step up to the plate in order to relieve her pain.

Ross continues to try and mend his marriage to Emily. When Chandler accidentally kisses Monica in front of everyone before leaving for work, he tries to recover by kissing Rachel and Phoebe as well. Meanwhile, Phoebe starts getting irritated by everyone's London stories.

At the end of semester Ross gets his student evaluations and one of them writes that he's hot. It turns out to be a cute girl named Elizabeth and even though it could cost him his job, Ross considers dating her. An ex-girlfriend of Chandler's from college is directing the new Al Pacino movie and Joey asks Chandler for help with getting an audition. Meanwhile, after a fire ruins Phoebe and Rachel's apartment, they're forced to find temporary living spaces with Monica and Joey.

Chandler and Phoebe shop for a ring for Monica. Chandler finds the perfect one, but Phoebe accidentally lets it get away. While Chandler is busy with getting the ring back, Joey and Ross are lead to believe that he's mad at them, so they decide to team up and give him a cold shoulder treatment. Rachel continues to date Paul and wants him to open up to her, however, he opens up a bit too much.

Joey is a celebrity contestant on "The $100,000 Pyramid," with its actual host, Donny Osmond. Meanwhile, Phoebe's bachelorette party features a rather unexpected surprise when the stripper shows up. Also, Chandler and Ross attend a college reunion and flash back to 1987 to reflect on a pact they made when they were in college.

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.