Some of the worst dogs in Britain come face to face with top trainers, who attempt to knock the dogs and their owners into shape with a strong dose of tough love and hard discipline. Jimmy Chew is a springer spaniel whose one mission in life is to be as naughty as he can. Hamish is a standard schnauzer who attacks every animal he sees, and Joe is a rottweiller cross whose bullying behaviour is threatening his owner's health.