Jack Russell Bertie loves to bark - and brothers Sherlock, Dobbie and Gizmo are only too eager to join the chorus. However, the incessant barking is a cause of worry for husbands Andy and Rich, so they call upon trainers Nanci and Jo to help calm this cacophonous quartet. Plus, a wife seeks help calming her 18-month-old cockapoo Freddie, as his behaviour is terrifying her husband.

A new student enrols in the imposing form of a four-year-old newfador called Ruby. Eight-stone of solid dog, Ruby refuses to budge when owners Nichola and Zeal take her for a walk. However, trainers Sean and Kamal soon there's more to Ruby's stubbornness than meets the eye. Six-year-old Maltese Bichon cross Marco arrives with fed up owner Beth in tow. Beth inherited Marco from her late father - and Marco's repaying the favour by ignoring every word Beth says.