In 5th Century Britian, a young Merlin struggles for his place in his known land under the tutelage of The Mage, a local wizard whom sees the young man's potential for magic, as well as face off against his evil former friend, Vendiger, whom plots with a feudal warlord king to conquer all of Britian using an army of flying dragons, and only Merlin with the alliance of the local Prince Uther and Ingraine and a pair of mystical goddesses, can have the power to stop the evil from taking over the land.

Sherlock Holmes and Watson are on the trail of a criminal and scientific mastermind who seems to control monsters and creations which defy belief.