Julius Borden shows up in Camelot with news of a magical secret that could threaten to change the landscape of the kingdom. He has found the final part of the key to the tomb of Ashkanar which is an ancient mausoleum which holds insode the last remaining dragon's egg.
Merlin is a young warlock who arrives in the kingdom of Camelot after his mother arranges for him to stay with the court physician, Gaius. He discovers that the king, Uther Pendragon, has outlawed magic and imprisoned the last great dragon deep under the kingdom.
The dragon tells Merlin that he plays an important role: to protect Uther's son, Arthur, who will bring forth a great kingdom. When Merlin meets Arthur, he believes that he is arrogant and Arthur, likewise, views Merlin as subservient. Merlin must keep his magic secret or face being executed by Uther.