Kristen is trying to forget the death her best friend and that she had dated a murderer; she parties every night, until she meets her ex-boyfriend in the Hamptons.
Kirsty and Rachel are invited to a fancy costume ball in a castle, but Jack Frost plans to turn it into a disaster by taking Flora, the Dress-up Fairy's three magical objects.
Marshall Armstrong, having a hard time fitting in with the kids at his new school because of the way he looks and the food he eats, invites his classmates to his house for a birthday party and makes sure it is not a disaster.
Frannie opens a fortune telling business at school after assisting Star, who reads tarot cards at a surprise party for Frannie's father, but soon it becomes clear that making up fortunes can cause a lot of trouble.
Six-year-old Eloise loves to take a bath, which is bad news for Mr. Salomone and the elegant people gathering below in the Plaza's Grand Ball Room for the charity event of the season, a Masked Ball.