English actor, comedian and director Martin Clunes sets out to discover the relationship between humans and dogs. Clunes takes a look at why people have shared their homes with an animal that is genetically just like a wolf. This relationship has lasted for centuries and is changing in the 21st century. Beginning with his own dogs, Clunes wonders about these nearly human companions that share the DNA of something much wilder. His journey takes him to Africa, Australia and America in search of the household dogs surviving wild ancestors.