Sir Charles Baskerville dies on the moor under mysterious circumstances and rumors abound about a demonic hound. When the American heir arrives to take charge, a family friend calls in Holmes and Watson to get to the heart of the mystery.

Adapted from Charles O'Neal's 1949 book, this follows the lighthearted adventures of a late 19th Century young man named Jamie McGrew, the three wishes granted to him in a dream by a fairy queen, and the unusual way they come true. His first is for travel (he goes from Ireland to a life of horse trading in Georgia); his second, to marry the girl of his dreams; the third, a son with the gift of poetry and the ability to speak in the ancient Gaelic tongue.

Sherlock Holmes uses his abilities to take on cases by private clients and those that the Scotland Yard are unable to solve, along with his friend Dr. Watson.