Clementine Cordelia Bird (known as Clemmy), is 8 year’s old. A petite, flaxen-haired girl with blue-green eyes and a mischievous grin, Clemmy discovers that her old babysitter Mrs Mac knows something about her mother, who has been missing for over a year. Determined to find her mother, Clemmy becomes The Littlest Detective in London. However, when the evil, 14-year-old Natasha Commonov becomes involved, Clemmy discovers that finding her mother might be a little more difficult than she first thought.