In this story inspired by the timeless classic, A Christmas Carol, Alvin finds himself center stage as a Scroogelike little chipmunk. Ghostly visits from Dave, Theodore and Simon as the spirits of Christmas Past, Present, and Future help him understand the true meaning of the Holiday.

Fraternal twins Nikki and Nora are forced back into each other's lives when they inherit a detective agency. As they solve a murder, they realize their differences may be their greatest advantage.