Comedy sequel following the adventures of Zeus the dog when he and his family head to California for the Christmas holidays. The Bannister family, led by George (Gary Valentine) and Belinda (Elisa Donovan), adore Zeus, who has saved their bacon a number of times in the past. For Christmas the Bannisters fly to stay with their relative, Aunt Barbara (Shelley Long), at her extravagant beach mansion. Here Zeus finds a rival for human affection, the boisterous puppy, Eve. How will he deal with the young pretender?