Ann Marie moves out of Brewster, New York to an apartment in New York City, with the help of her agent Harvey Peck (Ronnie Schell), much to the chagrin of her father (Lew Parker).
Laura and Millie spend a harrowing night alone when Rob and Jerry go off on a fishing trip.
When Donald's secretary goes on maternal leave, Judy Bessemer suggests hiring Ann as a substitute.
Finding out that Broadway producer Harold J. Davis is seeking a fresh-faced unknown for his next play, Ann goes out of her way to get recognized by him, and even goes so far as to get Donald to put the good word in for her.
Laverne, Shirley, Frank, and Edna travel to New York to visit Frank's mother and attend a street festival; they are joined there by Lenny and Squiggy (who hitchhiked).