"When Mallory wins Fashion Fran's design contest, she and Mary Ann are headed to New York City! But as they share the sights, sounds, and tastes of New York, there's just one problem. Only Mallory gets to appear on the Fashion Fran show, even though she pinky-swore with Mary Ann that they'd both go on. Can Mallory find a way to share the spotlight with her best friend before the pinky-swear she made ruins the trip of a lifetime--and their friendship?"--...

Despite her fears of being a "third wheel," Mallory goes on a cruise for the wedding of the mother and father of her two best friends.

When Mallory gets the lead in the school play, she cannot understand why her best friend Mary Ann is not just as excited as she is, but eventually she finds out--and learns who her real friends are.