Staffordshire bull terrier-cross Sage is setting up residence with the Fianko family, first-time puppy owners living in south London. While mum Cheryl may have brought up five kids, controlling a boisterous puppy proves trickier than she expected, and expert Louise is called in to help restore some calm.Border collie Meg has her work cut out for her as she joins Victoria, a 16-year-old novice shepherdess with a big ambition to train her own sheepdog. If juggling lambing season and obedience training isn't hard enough, Victoria must first encourage her pup not to be nervous of sheep.And there is a big surprise in Salisbury when great dane Shelby joins a young family which already includes Mr Cooper, a three-year-old dachshund. The new pup is keen to be friends, but he will grow to double a dachshund's height in a matter of weeks, and there is no guarantee Mr Cooper will be happy to play along too.