Cesar travels to the United Kingdom to help troubled dog owners and their less-than-proper pooches. Dominic, a thoughtful 17-year-old has had one too many out-of-control walks with his two Jack Russells, Tyson and Jesse. Tracy Nolan and her family took in a feral street dog named Molly who has turned extremely territorial toward strangers, other dogs, and even children. The Nolans hope that Cesar can show them how to properly introduce Molly to new dogs and how to curb her territorial behavior. Melanie's beloved Dalmatian, Cooper, is a large handsome dog whose personality turns ugly around houseguests and on walks. Mel is concerned that this behavior could evolve into more dangerous habits.