The last episode of Friends is actually two episodes called The
Last One Part 1 and Part 2. Erica is taken to hospital where she
gives birth to twins (much to Monica and Chandler's surprise).
Monica and Chandler name the baby girl Erica, after the
birth-mother, and the boy Jack, after Monica and Ross' father.
Ross and Rachel have spent the night together - i.e. had sex -
and Ross particularly found it amazing. He wants Rachel to stay,
but she says it was 'the perfect way to say goodbye' and is still
planning on moving to Paris. Because Monica and Chandler will be
moving in a few days, Joey has got them a housewarming present -
Chick Junior and Duck Junior.
Ross continues to debate over whether he should tell Rachel how
he feels about her and how much he wants her to stay - Phoebe
encourages him to tell her, but he says she'll just say no. Monica
and Chandler bring the twins home and introduce them, but Rachel
has to leave immediately afterwards to catch her flight. When she's
left, Ross talks to Joey and Phoebe, finally deciding he has to
stop Rachel to tell her how he feels. Phoebe drives him in her cab.
They turn up at the airport, but it's the wrong one - they're at
JFK, whereas Rachel is at Newark airport.
Joey and Chandler find that the chick and duckling have gotten
inside the Foosball table, and with help from Monica they break it
open to rescue the birds - the table is essentially dead. Phoebe is
driving Ross to Newark airport at (literally) break-neck speed. She
phones Rachel, who has boarded the plane, and tells her that
something is wrong with the left flange on the plane. Rachel
doesn't believe her, but a fellow passenger overhears, panics, and
there is a mass exodus where everyone disembarks.
Chandler tells Joey to keep the chick and duckling with him,
apparently because he and Monica will have too much to do with the
babies, but actually because Monica doesn't want the birds. At
Newark airport, they catch Rachel getting back on the plane. Ross
asks her to stay but she says she can't. He leaves heartbroken and
goes home alone.
At home he finds a message from Rachel on the answering machine.
She's apologising and realising that she loves him, that she needs
to get off the plane. An argument about whether she can disembark
is heard when the message is suddenly cut off. Ross yells 'Did she
get off the plane? Did she get off the plane?' 'I got off the
plane,' comes a voice from behind and Rachel is in the doorway of
his flat. They kiss.
Finally, the six friends are standing in Monica and Chandler's
empty apartment. They reminisce briefly about the fact that all of
them (barring Ross) have lived there at some point, and Chandler
tells the babies that it was a happy place. All six of them leave
their keys to the flat on the counter top, then Rachel asks if
there's time to get some coffee before Chandler and Monica leave
for their new house. Chandler says 'Sure. Where?' The camera pans
across the empty flat one last time from right to left, fading out
over the keyhole of the door.