After her twelfth birthday, Rory checks off a list of things she is finally allowed to do, but unexpected consequences interfere with her involvement in the movie being shot at her school, while a weird prediction starts to make sense.

"It's Karen's birthday! She can't wait for all those presents. Karen is even having two parties--one at Daddy's house and one at Mommy's. But what Karen really wants for her birthday is one party, with her whole family together. Will Karen's birthday wish come true?"-

A girl in a large family is looking forward to her first "double digit" birthday, but soon discovers that growing up brings some unwanted changes.

It's bad enough Ian Barker has to spend his twelfth birthday with his sister and their two annoying cousins. The four of them can't ever hang out without getting into trouble. Vinnie and Jonny always want to play with Ian's stuff. They take extra turns and break everything they touch. Even Ian's new birthday presents are up for grabs. But when Ian gets a Slappy dummy from his dad, things go from bad to worse.

When a bored Princess Patricia Priscilla makes her chambermaid switch identities with her so she can attend the village school, her attitude changes and she plans a new way to celebrate her sixteenth birthday.

Gil the ant mistakenly believes that all of his friends have forgotten his birthday.

When Violet thinks she isn't invited to Kate's birthday party, she spreads rumors that threaten to ruin everything.

At Clifford's birthday party, the children and their dogs give him some gifts, a big cake, and an extra-special surprise.

"Cassie is so excited to turn seven! She knows it's a special day, but she has no idea what kind of magic is in store" -- Cover verso.

"Phineas and Ferb know that when you want to make every day count, birthdays are the perfect excuse to do something extra wild!"--p.[4] of cover.