July 2, 1986
Olivia Flaversham's father, a noted toymaker, is kidnapped during her birthday celebration. Dr. David Q. Dawson promises to escort Olivia safely to see the famous mouse detective Basil who lives underneath Sherlock Holmes' flat in Baker Street. Basil, at first reluctant to take the case, becomes excited when he realizes that the kidnapping may be connected to his arch-enemy Professor Ratigan. As Basil investigates the case with the help of Dawson, he discovers that there is more than just the freedom of a toymaker at stake. Professor Ratigan has concocted an evil plot that could bring down the entire mouse kingdom.