Santa's Christmas Star is missing! Merry Ann has wanted to be a detective since she was an elfling. Now, she has her own detective agency and her first case. It's the day before Christmas Eve, and someone has taken the silver star that usually sits on top of the North Pole Christmas tree. Who could have taken it? And why? Merry Ann is determined to solve the case before the tree-lighting ceremony tomorrow night. However, as she tries to follow the clues, her little brother keeps getting in the way. What is a beginning elf detective to do?