Join Holly and Ivy Bell as they, along with the help of their troublesome cat, Frosty, solve the mystery of the missing choir director.
While the trio searches for clues of the missing woman, Holly steps in to direct the children's choir, and Ivy is volunteered to bake for the holiday party.
The only problem is that, despite Holly's musical experience, she has never worked with kids, and Ivy is a disaster in the kitchen!
Add in Frosty's tendencies to find trouble, and the mystery quickly turns slapstick.
But there's a deadline; the choir director must be found by Christmas Eve. Can the Bell sisters overcome their obstacles and solve the mystery?