Katie is unpleasantly surprised to find out her family is moving into a new house after her mom's wedding in the latest addition to the Cupcake Diaries series. Katie's mom is getting married! Katie and her three best friends couldn't be happier and have so much fun pitching in with getting ready for the big day—especially with cake testing! But when Katie finds out her mom's marriage means her family has to move, suddenly the wedding isn't as joyous an occasion. What will life be like in a new home with a new family?