Mia is an aging, often grumpy house cat. Her new sister Eve is a spunky, young excitable tabby cat. Together with their Aunts, the family sets out to the village of Helmston for Christmas shopping. When Mia and Eve arrive they meet some new friends who have lost the spirit of Christmas and need some help to find it again, including two little sisters desperate to help their father and a mean old banker with a deeper story. When the entire village of Helmston races to help a ship in the harbour, Mia and Eve will come to the rescue once again and help everyone have a Merry Christmas.