The girls make their move to New York City, settling in with their Aunt Margo and setting out toward their respective ambitions (Kate as an entertainer, Allison as a fashion designer).

Kate becomes assistant to Rollo the Great, a magician whose next big trick is to make Kate appear in two places at once.

A sudden snow storm forces the girls to celebrate Christmas in New York instead of going home to Iowa.

Margo's social life is in a slump, so Allison and Kate attempt to get her a date. In a misguided attempt to lift Margo's spirits, Kate hires a man from her acting class to date Margo.

Margo is nominated for an award, but after losing so many times, she choses to send Billy in her place. He chooses Allison as his "friend" date, but both come home wondering if they could be more than just friends.

Kate meets a popular New York DJ at a restaurant and immediately starts planning a wedding only to discover she is not the only Foster girl he is interesting in.

Allison is asked to write an article for her school newspaper. With much help from Margo, the article is published and receives rave reviews making Allison think her future is as a writer, not a fashion designer. When she sets out to write a profile of Mr. Arrechia, her future as a writer is in jeopardy.

Kate auditions for a commercial for Maxi Burger. After a week of rehearsal (driving her housemates insane) she loses her voice the morning of the audition. Allison agrees to go in her place and wins the job. When the real Kate arrives to shoot the commercial, she is fired for not being "shy" enough.

Late-night movie watching inspires the housemates to imagine themselves in some of cinema's greatest scenes.

Everyone in Allison's design class loves the new, rich girl Janie Blakemore until she steals Allison's ideas and presents them as her own. Allison soon finds out Janie is only in the class because her parents want her to have a 'respectable' profession. Her real love is stand-up comedy. Kate agrees to help Janie get her career started by using her as a warm-up act in an Amateur Night perfomance.

Allison dates an older man, only to find they don't have much in common.

Dad makes a surprise visit to New York to see the twins. He disapproves of their new lives and demands they move back home to Iowa. Allison reluctantly obeys her father and prepares to leave New York. Kate resists and has no plans to join her sister.