Monica and Chandler travel to Ohio to meet a young pregnant woman, Erica Simmons, who is considering allowing them to adopt her child. Due to a mix-up at the adoption agency, Erica thinks Monica is a reverend and Chandler is a doctor. Joey dates Phoebe's friend but annoys her with his territorial eating habits. Rachel picks out an outfit for Ross to wear on a date but he ends up in a unique new wardrobe.

Joey implores Francophile Phoebe to teach him French before an important audition, but she quickly becomes exasperated. Surrogate mom Erica is visiting town and tells the Bings that the baby's father may be a shovel killer. Ross and Rachel grow closer after her sarcastic father, Dr. Green, suffers a heart attack.

With Rachel leaving tomorrow, the gang hosts a farewell party for her. She says goodbye to each of her friends individually, except for Ross and he's offended. Monica precisely packs for her new life in the suburbs with Chandler, and they keep a watchful eye on the extremely pregnant Erica, who is in town until the baby arrives.

Ross and Phoebe chase Rachel to the airport, but end up at the wrong one. Chandler and Monica finish packing for their move to the suburbs, and Joey loses Chick Jr. and Duck Jr. in the foosball table.

The series finale finds Rachel, Monica, Phoebe, Joey, Chandler and Ross embarking on the next chapters in their lives. The six of them have been there for one another through all the ups and downs of becoming adults. Now it's their last day together, and it's one of momentous events and last-minute surprises. Even as the friends make major decisions, they share a bond that will last forever.