Marmaduke (voice of Owen Wilson) and his owner Phil Winslow (Lee Pace) drive along the coast in Marmaduke. When Phil moves his family to Orange County, their big Great Dane Marmaduke has to learn to fit in in a new place just like the rest of the family. The fun loving teenage dog is one of the family as far as the Winslows are concerned, and he can get into just as much mischief as any kid -- human or canine.