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.

A group of fugitive Knights Templar attacks a pirate ship and they are cursed to turn into hideous monsters. To fight the curse and ultimately save the world, they must defeat the wizard-dragon who is determined to destroy it.

In this present day prequel, the robot invaders attack the Earth, forcing a small band of humans to seek refuge below the surface of the planet.