The nefarious Professor Ratigan plots to usurp the throne of England by kidnapping the Queen and installing a mechanical doppelganger in her place. The brilliant mouse detective, Basil of Baker Street, must race against time to uncover Ratigan's scheme and prevent his rise to power, navigating the shadowy underbelly of Victorian London and confronting the cunning rodent mastermind. The narrative unfolds as a classic detective story, following Basil's deductive reasoning and daring pursuits.

This adaptation of Disney's animated film is likely to be enjoyed by young readers familiar with the movie, offering a familiar narrative in book form. The mystery and adventure elements provide engaging plot points for children. The character of Basil of Baker Street, a mouse detective, offers a unique and appealing protagonist for a younger audience. The story's focus on a clear villain and a heroic detective makes it a straightforward and satisfying read for its target demographic.