Kate, Humphrey and their three wolf cubs (Stinky, Claudette and Runt) are happily preparing to celebrate their first winter together when their smallest cub, Runt, mysteriously disappears. They must now go on a journey across the wilderness to find and bring back Runt before the winter snows block their way home. It's their greatest adventure yet, filled with action and suspense as well as plenty of the humour and heartwarming moments that were delivered in the first theatrical release. While their adventure does not end exactly as planned, Kate and Humphrey discover that "home is where the family is."