If you think Christmas comes only once a year...think again! For Noelle and her friends Holly， Carol， and Claus， the most wonderful day of the year is Un-Christmas. It?s the only day of the year that they actually go to school. And the mail gets delivered. But the best thing about Un-Christmas Day is that they don?t have to open any presents! Mike Reiss and David Catrow team up once again， this time to reveal the true meaning of Un-Christmas. Kids who wish it were Christmas every day will think twice. ，Since every day--with the exception of one --is Christmas， Noelle， who lives in Christmas City， prepares to celebrate the exciting， yet lesser known holiday called Un-Christmas Day!，Noelle celebrates the only day in Christmas City that is not Christmas by undecorating the tree， greeting the postman， and going to school.