Animal mindreader Opie Jones is off to Scotland to join her dad on the set of his Scottish medical TV show, Highland Docs, accompanied by friends Jackson and Cillian, as well as Margot, the cat with attitude, and Opie's super-keen new sidekick, Slug (an actual slug). But before they get the chance to try out their acting skills, dastardly villain Varling and his band of brainwashers are back with an evil new plan! Can Opie and the gang (plus a showbiz pig) save the day?