In 1888, Sherlock Holmes faces a crisis far removed from his usual criminal intrigues: financial ruin. When his rent cheque bounces and eviction looms, he turns his deductive eye not to a murder, but to the books of a booming London patisserie chain about to go public. With Dr. Watson as his reluctant accomplice, Holmes uncovers a web of cooked accounts, suspect audits, and a financial deception so bold it threatens the savings of ordinary investors. But as the Great Detective follows the money, a more personal question arises: can he use his skills not only to solve the puzzle, but to save his home at 221B Baker Street?