Diana Emerson (Hillary Brooke) is in the book department of Klopper's Department store looking for a copy of the book ''Dark Safari'', written by the famed explorer Cuddleford. Buzz Johnson (Bud Abbott) overhears Diana saying that she will pay $2,500 for a map that is inside that book. He devises a plan to pass off his friend Stanley Livington (Lou Costello) as a great explorer who accompanied Cuddleford on the expedition described in the book. With claims that he can reproduce the map, the two men go to Diana's home that very night. They agree to accompany her on an African expedition, and when Buzz overhears that Clyde Beatty has been offered $20,000 to lead the expedition, he feels that the map is worth considerably more than $2,500.