Sherlock Holmes and Dr. Watson join forces to investigate a jewel theft and a murder on a train, leading them on an adventure in Victoria Falls. Along the way, they encounter bumbling detectives, double-crossing, and a treasure map, unraveling a whodunnit mystery full of twists and turns.

Sherlock Holmes and his loyal companion, Dr. John Watson, are called to Vienna to investigate a series of crimes during a theater performance. With the impending reunion of a famous singer and the theft of a valuable jewel, Holmes must use his deduction skills to solve the mysteries and uncover the truth.