After celebrating their first nine same-day birthdays together, Amanda and Leo, having fallen out on their tenth and not speaking to each other for the last year, prepare to celebrate their eleventh birthday separately but peculiar things begin to happen as the day of their birthday begins to repeat itself over and over again.

From the bestselling author of the generation-defining series The Baby-sitters Club comes a series for a new generation! It's Karen's special day!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? Ann M. Martin is the creator...

Nancy is furious when she cannot go to her friend Bree's butterfly-themed birthday party, but her family's outing might just be extraordinary enough to make her feel better. Includes facts about butterflies.

Despite the objections of Pig and Mouse, Duck insists on adding a special ingredient to the cake they are making to celebrate Cow's birthday.

Poppleton the pig makes a new friend after an icicle accident, creates a bust of Cherry Sue, and gets a wintry birthday surprise from his pals.

Their friends must decide which party to attend when Francine schedules her birthday party for the same day as Arthur's birthday party.

Mr. Rabbit helps a little girl find a colorful present for her mother's birthday.

Annie and her pet rabbit, Snowball, invite Henry and Mudge to a dress-up birthday party, but there is some confusion about what the guests are supposed to wear.

Peter wants to invite Amy to his birthday party but he wants it to be a surprise.

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.