Chandler hits on a woman at Central Perk, not realizing she is Joey's new girlfriend. He soon realizes he is very attracted to, possibly in love, with her. Ross and Rachel play the jealousy game in their relationships. And Phoebe desperately tries to catch a cold after discovering that her voice is sexier and her singing better when she has phlegm in her throat.

Ross's new girlfriend seems nearly perfect until he visits her house and discovers that her apartment is incredibly dirty. Chandler helps Joey pick out a thoughtful present for Kathy's birthday. Rachel attempts to finish a crossword puzzle by herself. And 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 passionate kiss. Needless to say, Joey is not happy when he finds out about it. 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. 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.

Phoebe considers her options when her brother visits with his new wife and asks her to carry their child. Joey works as a tour guide at Ross's museum and tries to tear down the walls between tour guides and scientists. And Chandler seeks advice from Monica and Rachel after he fears that he will not live up to Kathy's sexual expectations--especially since the last guy she slept with before him was Joey.

After seeing Kathy's play, Chandler becomes convinced she is cheating on him with her co-star. Rachel develops a crush on one of her customers. Monica becomes jealous when she realizes she is no longer the 'hostess'.